diff --git a/client/src/App.css b/client/src/App.css
index ac62706..75a0b30 100644
--- a/client/src/App.css
+++ b/client/src/App.css
@@ -4241,6 +4241,79 @@ html.theme-cupertino .events-scroll-container {
   }
 }
 
+/* Compact weather metric sliders (LogEntryEditor) */
+.weather-metrics-grid {
+  gap: 12px 16px;
+}
+
+.weather-metrics-grid .weather-metrics-span-2 {
+  grid-column: 1 / -1;
+}
+
+.metric-range-input--compact {
+  gap: 0;
+  margin: 0;
+}
+
+.metric-range-input--compact .metric-range-header {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 8px;
+  margin-bottom: 6px;
+}
+
+.metric-range-input--compact .metric-range-header label {
+  margin: 0;
+  font-size: 13px;
+  line-height: 1.25;
+}
+
+.metric-range-input--compact .metric-range-value {
+  font-size: 0.8125rem;
+  font-weight: 600;
+  color: #cbd5e1;
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+  flex-shrink: 0;
+}
+
+.metric-range-input--compact .metric-range-control-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.metric-range-input--compact .metric-range-slider {
+  flex: 1;
+  min-width: 0;
+  width: auto;
+  margin: 0;
+}
+
+.metric-range-input--compact .metric-range-number {
+  width: 4.25rem;
+  min-width: 4.25rem;
+  max-width: 4.25rem;
+  flex-shrink: 0;
+  padding: 8px 6px;
+  text-align: center;
+  font-size: 0.9375rem;
+}
+
+@media (max-width: 480px) {
+  .metric-range-input--compact .metric-range-slider {
+    --tank-slider-thumb: 28px;
+  }
+
+  .metric-range-input--compact .metric-range-number {
+    width: 3.75rem;
+    min-width: 3.75rem;
+    max-width: 3.75rem;
+    padding: 10px 4px;
+  }
+}
+
 .vessel-tanks-section {
   grid-column: 1 / -1;
   margin-top: 8px;
diff --git a/client/src/components/LiveLogView.tsx b/client/src/components/LiveLogView.tsx
index d129592..873196d 100644
--- a/client/src/components/LiveLogView.tsx
+++ b/client/src/components/LiveLogView.tsx
@@ -82,6 +82,7 @@ type LiveModal =
   | 'temp'
   | 'precip'
   | 'sea_state'
+  | 'visibility'
   | 'course'
   | 'fuel'
   | 'water'
@@ -557,6 +558,12 @@ export default function LiveLogView({
             remarks: LIVE_EVENT_CODES.PRESSURE
           })
         }
+        if (parsed.visibility) {
+          partials.push({
+            visibility: parsed.visibility,
+            remarks: LIVE_EVENT_CODES.VISIBILITY
+          })
+        }
         if (parsed.tempC) {
           partials.push({ remarks: liveTempRemark(parsed.tempC) })
         }
@@ -724,6 +731,16 @@ export default function LiveLogView({
           })
         }, 'sea_state')
         break
+      case 'visibility':
+        if (!primary) return
+        setModal('none')
+        void runQuickAction(async () => {
+          await appendQuickEvent(logbookId, entryId, {
+            visibility: primary,
+            remarks: LIVE_EVENT_CODES.VISIBILITY
+          })
+        }, 'visibility')
+        break
       case 'course': {
         const course = primary || lastCourseFromEvents(events)
         if (!course) return
@@ -923,6 +940,9 @@ export default function LiveLogView({
                 <button type="button" className="live-log-subaction-btn" onClick={() => openValueModal('sea_state')} disabled={busy}>
                   {t('logs.live_sea_state_btn')}
                 </button>
+                <button type="button" className="live-log-subaction-btn" onClick={() => openValueModal('visibility')} disabled={busy}>
+                  {t('logs.live_visibility_btn')}
+                </button>
               </div>
             )}
           </div>
@@ -1165,7 +1185,7 @@ export default function LiveLogView({
         </div>
       )}
 
-      {['pressure', 'temp', 'precip', 'sea_state', 'fuel', 'water', 'sog', 'stw'].includes(modal) && (
+      {['pressure', 'temp', 'precip', 'sea_state', 'visibility', 'fuel', 'water', 'sog', 'stw'].includes(modal) && (
         <div className="live-log-modal-backdrop" onClick={() => setModal('none')}>
           <div className="live-log-modal" onClick={(e) => e.stopPropagation()}>
             <h3>
@@ -1173,6 +1193,7 @@ export default function LiveLogView({
               {modal === 'temp' && t('logs.live_temp_btn')}
               {modal === 'precip' && t('logs.live_precip_btn')}
               {modal === 'sea_state' && t('logs.live_sea_state_btn')}
+              {modal === 'visibility' && t('logs.live_visibility_btn')}
               {modal === 'fuel' && t('logs.live_fuel_btn')}
               {modal === 'water' && t('logs.live_water_btn')}
               {modal === 'sog' && t('logs.live_sog_btn')}
@@ -1192,7 +1213,8 @@ export default function LiveLogView({
                   : modal === 'temp' ? t('logs.live_temp_placeholder')
                     : modal === 'precip' ? t('logs.live_precip_placeholder')
                       : modal === 'sea_state' ? t('logs.live_sea_state_placeholder')
-                        : modal === 'fuel' ? t('logs.live_fuel_placeholder')
+                        : modal === 'visibility' ? t('logs.live_visibility_placeholder')
+                          : modal === 'fuel' ? t('logs.live_fuel_placeholder')
                           : modal === 'water' ? t('logs.live_water_placeholder')
                             : modal === 'sog' ? t('logs.live_sog_placeholder')
                               : t('logs.live_stw_placeholder')
diff --git a/client/src/components/LogEntryEditor.tsx b/client/src/components/LogEntryEditor.tsx
index a7aefe0..dccaa17 100644
--- a/client/src/components/LogEntryEditor.tsx
+++ b/client/src/components/LogEntryEditor.tsx
@@ -56,6 +56,25 @@ import { computeTrackStats, formatTrackStats } from '../utils/trackStats.js'
 import { computeFuelPerMotorHour, formatFuelPerMotorHour } from '../utils/fuelStats.js'
 import { useRegisterUnsavedChanges } from '../context/UnsavedChangesContext.tsx'
 import TankLiterInput from './TankLiterInput.tsx'
+import MetricRangeInput from './MetricRangeInput.tsx'
+import {
+  formatHeelDeg,
+  formatPressureHpa,
+  formatSeaState,
+  formatVisibilityMeters,
+  HEEL_MAX_DEG,
+  HEEL_MIN_DEG,
+  parseHeelDeg,
+  parsePressureHpa,
+  parseSeaState,
+  parseVisibilityMeters,
+  PRESSURE_DEFAULT_HPA,
+  PRESSURE_MAX_HPA,
+  PRESSURE_MIN_HPA,
+  SEA_STATE_MAX,
+  SEA_STATE_MIN,
+  VISIBILITY_STEPS_M
+} from '../utils/weatherMetrics.js'
 import {
   computeEveningTankMaxLiters,
   computeRefilledTankMaxLiters,
@@ -201,6 +220,7 @@ export default function LogEntryEditor({
   const [evWindDirection, setEvWindDirection] = useState('')
   const [evWindStrength, setEvWindStrength] = useState('')
   const [evSeaState, setEvSeaState] = useState('')
+  const [evVisibility, setEvVisibility] = useState('')
   const [evWeatherIcon, setEvWeatherIcon] = useState('')
   const [evCurrent, setEvCurrent] = useState('')
   const [evHeel, setEvHeel] = useState('')
@@ -361,6 +381,7 @@ export default function LogEntryEditor({
       windDirection: evWindDirection,
       windStrength: evWindStrength,
       seaState: evSeaState,
+      visibility: evVisibility,
       weatherIcon: evWeatherIcon,
       current: evCurrent,
       heel: evHeel,
@@ -383,7 +404,7 @@ export default function LogEntryEditor({
     return hasUnsavedEventDraft(buildEventFromForm(), editingEventIndex, events)
   }, [
     evTime, evMgk, evRwk, evWindPressure, evWindDirection, evWindStrength, evSeaState,
-    evWeatherIcon, evCurrent, evHeel, evSailsOrMotor, evLogReading, evDistance,
+    evVisibility, evWeatherIcon, evCurrent, evHeel, evSailsOrMotor, evLogReading, evDistance,
     evGpsLat, evGpsLng, evRemarks, editingEventIndex, events
   ])
 
@@ -985,6 +1006,7 @@ export default function LogEntryEditor({
       setEvWindStrength(parsed.windStrength)
       setEvWindPressure(parsed.windPressure)
       if (parsed.windDirection) setEvWindDirection(parsed.windDirection)
+      if (parsed.visibility) setEvVisibility(parsed.visibility)
       if (parsed.weatherIcon) setEvWeatherIcon(parsed.weatherIcon)
 
       showAlert(t('settings.weather_success'))
@@ -1047,6 +1069,7 @@ export default function LogEntryEditor({
     setEvWindDirection('')
     setEvWindStrength('')
     setEvSeaState('')
+    setEvVisibility('')
     setEvWeatherIcon('')
     setEvCurrent('')
     setEvHeel('')
@@ -1070,6 +1093,7 @@ export default function LogEntryEditor({
     setEvWindDirection(normalized.windDirection)
     setEvWindStrength(normalized.windStrength)
     setEvSeaState(normalized.seaState)
+    setEvVisibility(normalized.visibility)
     setEvWeatherIcon(normalized.weatherIcon)
     setEvCurrent(normalized.current)
     setEvHeel(normalized.heel)
@@ -1698,8 +1722,8 @@ export default function LogEntryEditor({
               </div>
             </div>
 
-            <div className="form-grid mb-4">
-              <div className="input-group course-dial-section">
+            <div className="form-grid weather-metrics-grid mb-4">
+              <div className="input-group course-dial-section weather-metrics-span-2">
                 <label>{t('logs.event_wind_direction')}</label>
                 <CourseDialInput
                   value={evWindDirection}
@@ -1723,41 +1747,76 @@ export default function LogEntryEditor({
                 />
               </div>
 
-              <div className="input-group">
-                <label>{t('logs.event_wind_pressure')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. 1013 hPa"
-                  className="input-text"
-                  value={evWindPressure}
-                  onChange={(e) => setEvWindPressure(e.target.value)}
-                  disabled={saving || weatherLoading}
-                />
-              </div>
+              <MetricRangeInput
+                label={t('logs.event_wind_pressure')}
+                value={evWindPressure}
+                onChange={setEvWindPressure}
+                disabled={saving || weatherLoading}
+                min={PRESSURE_MIN_HPA}
+                max={PRESSURE_MAX_HPA}
+                step={1}
+                defaultNumeric={PRESSURE_DEFAULT_HPA}
+                parse={parsePressureHpa}
+                format={formatPressureHpa}
+                formatDisplay={(hpa) =>
+                  t('logs.weather_slider_pressure', { value: hpa, defaultValue: `${hpa} hPa` })}
+                numberMin={PRESSURE_MIN_HPA}
+                numberMax={PRESSURE_MAX_HPA}
+                numberStep={1}
+                numberPlaceholder="1013"
+              />
 
-              <div className="input-group">
-                <label>{t('logs.event_sea_state')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. 3"
-                  className="input-text"
-                  value={evSeaState}
-                  onChange={(e) => setEvSeaState(e.target.value)}
-                  disabled={saving}
-                />
-              </div>
+              <MetricRangeInput
+                label={t('logs.event_sea_state')}
+                value={evSeaState}
+                onChange={setEvSeaState}
+                disabled={saving}
+                min={SEA_STATE_MIN}
+                max={SEA_STATE_MAX}
+                step={1}
+                defaultNumeric={0}
+                parse={parseSeaState}
+                format={formatSeaState}
+                formatDisplay={(level) =>
+                  t('logs.weather_slider_sea_state', { value: level, defaultValue: `${level}` })}
+                numberMin={SEA_STATE_MIN}
+                numberMax={SEA_STATE_MAX}
+                numberStep={1}
+                numberPlaceholder="3"
+                allowLegacyText
+              />
 
-              <div className="input-group">
-                <label>{t('logs.event_heel')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. 5"
-                  className="input-text"
-                  value={evHeel}
-                  onChange={(e) => setEvHeel(e.target.value)}
-                  disabled={saving}
-                />
-              </div>
+              <MetricRangeInput
+                label={t('logs.event_visibility')}
+                value={evVisibility}
+                onChange={setEvVisibility}
+                disabled={saving || weatherLoading}
+                discreteValues={VISIBILITY_STEPS_M}
+                defaultNumeric={10000}
+                parse={parseVisibilityMeters}
+                format={formatVisibilityMeters}
+                formatDisplay={(m) => formatVisibilityMeters(m)}
+                hideNumberInput
+              />
+
+              <MetricRangeInput
+                label={t('logs.event_heel')}
+                value={evHeel}
+                onChange={setEvHeel}
+                disabled={saving}
+                min={HEEL_MIN_DEG}
+                max={HEEL_MAX_DEG}
+                step={1}
+                defaultNumeric={0}
+                parse={parseHeelDeg}
+                format={formatHeelDeg}
+                formatDisplay={(deg) =>
+                  t('logs.weather_slider_heel', { value: deg, defaultValue: `${deg}°` })}
+                numberMin={HEEL_MIN_DEG}
+                numberMax={HEEL_MAX_DEG}
+                numberStep={1}
+                numberPlaceholder="5"
+              />
             </div>
 
             <div className="form-grid mb-4">
diff --git a/client/src/components/MetricRangeInput.tsx b/client/src/components/MetricRangeInput.tsx
new file mode 100644
index 0000000..15c1082
--- /dev/null
+++ b/client/src/components/MetricRangeInput.tsx
@@ -0,0 +1,196 @@
+import React, { useCallback } from 'react'
+import { useTranslation } from 'react-i18next'
+
+export interface MetricRangeInputProps {
+  id?: string
+  label: string
+  value: string
+  onChange: (value: string) => void
+  disabled?: boolean
+  min?: number
+  max?: number
+  step?: number
+  discreteValues?: readonly number[]
+  parse: (value: string) => number | null
+  format: (numeric: number) => string
+  defaultNumeric: number
+  /** Shown next to the label (current value). */
+  formatDisplay: (numeric: number, unset: boolean) => string
+  numberMin?: number
+  numberMax?: number
+  numberStep?: number | 'any'
+  numberPlaceholder?: string
+  allowLegacyText?: boolean
+  hideNumberInput?: boolean
+}
+
+function clamp(n: number, min: number, max: number): number {
+  return Math.min(max, Math.max(min, n))
+}
+
+export default function MetricRangeInput({
+  id,
+  label,
+  value,
+  onChange,
+  disabled = false,
+  min,
+  max,
+  discreteValues,
+  parse,
+  format,
+  defaultNumeric,
+  formatDisplay,
+  numberMin,
+  numberMax,
+  numberStep = 'any',
+  numberPlaceholder,
+  allowLegacyText = false,
+  hideNumberInput = false
+}: MetricRangeInputProps) {
+  const { t } = useTranslation()
+  const unsetLabel = t('logs.weather_slider_unset', { defaultValue: '—' })
+
+  const isLegacyText =
+    allowLegacyText && value.trim() !== '' && parse(value) === null
+
+  const emitNumeric = useCallback(
+    (numeric: number) => {
+      onChange(format(numeric))
+    },
+    [onChange, format]
+  )
+
+  const parsed = parse(value)
+  const unset = parsed === null
+  const sliderNumeric = unset ? defaultNumeric : parsed
+
+  const useDiscrete = discreteValues != null && discreteValues.length > 1
+
+  let sliderMin = 0
+  let sliderMax = 0
+  let sliderValue = 0
+
+  if (useDiscrete) {
+    sliderMin = 0
+    sliderMax = discreteValues.length - 1
+    if (unset) {
+      sliderValue = 0
+    } else {
+      let bestIdx = 0
+      let bestDiff = Math.abs(discreteValues[0] - sliderNumeric)
+      for (let i = 1; i < discreteValues.length; i++) {
+        const diff = Math.abs(discreteValues[i] - sliderNumeric)
+        if (diff < bestDiff) {
+          bestDiff = diff
+          bestIdx = i
+        }
+      }
+      sliderValue = bestIdx
+    }
+  } else if (min != null && max != null) {
+    sliderMin = min
+    sliderMax = max
+    sliderValue = clamp(sliderNumeric, min, max)
+  }
+
+  const handleSliderChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const idx = Number(e.target.value)
+    if (useDiscrete && discreteValues) {
+      emitNumeric(discreteValues[clamp(idx, 0, discreteValues.length - 1)])
+      return
+    }
+    if (min != null && max != null) {
+      emitNumeric(Number(e.target.value))
+    }
+  }
+
+  const handleNumberChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    onChange(e.target.value)
+  }
+
+  const handleNumberBlur = () => {
+    const next = parse(value)
+    if (next == null) {
+      if (!value.trim()) onChange('')
+      return
+    }
+    onChange(format(next))
+  }
+
+  const hintNumeric = useDiscrete && discreteValues
+    ? discreteValues[sliderValue]
+    : sliderValue
+
+  const displayLabel = unset ? unsetLabel : formatDisplay(hintNumeric, false)
+
+  if (isLegacyText) {
+    return (
+      <div className="input-group metric-range-input metric-range-input--compact">
+        <div className="metric-range-header">
+          <label htmlFor={id}>{label}</label>
+        </div>
+        <input
+          id={id}
+          type="text"
+          className="input-text"
+          value={value}
+          onChange={(e) => onChange(e.target.value)}
+          disabled={disabled}
+          placeholder={numberPlaceholder}
+        />
+      </div>
+    )
+  }
+
+  const hasSlider = useDiscrete || (min != null && max != null)
+
+  return (
+    <div className="input-group metric-range-input metric-range-input--compact">
+      <div className="metric-range-header">
+        <label htmlFor={hideNumberInput ? undefined : id}>{label}</label>
+        {hasSlider && (
+          <span className="metric-range-value" aria-live="polite">
+            {displayLabel}
+          </span>
+        )}
+      </div>
+      {hasSlider && (
+        <div className="metric-range-control-row">
+          <input
+            type="range"
+            className="tank-liter-slider metric-range-slider"
+            min={sliderMin}
+            max={sliderMax}
+            step={1}
+            value={sliderValue}
+            onChange={handleSliderChange}
+            disabled={disabled}
+            aria-valuemin={sliderMin}
+            aria-valuemax={sliderMax}
+            aria-valuenow={sliderValue}
+            aria-label={label}
+            aria-valuetext={displayLabel}
+          />
+          {!hideNumberInput && (
+            <input
+              id={id}
+              type="number"
+              className="input-text metric-range-number"
+              value={unset ? '' : value.replace(/\s*hPa\s*$/i, '').replace(/°\s*$/, '')}
+              onChange={handleNumberChange}
+              onBlur={handleNumberBlur}
+              disabled={disabled}
+              min={numberMin}
+              max={numberMax}
+              step={numberStep}
+              placeholder={numberPlaceholder}
+              inputMode="decimal"
+              aria-label={label}
+            />
+          )}
+        </div>
+      )}
+    </div>
+  )
+}
diff --git a/client/src/i18n/locales/da.json b/client/src/i18n/locales/da.json
index c4d3ce1..fb50c5c 100644
--- a/client/src/i18n/locales/da.json
+++ b/client/src/i18n/locales/da.json
@@ -280,6 +280,7 @@
       "live_pressure_btn": "Lufttryk",
       "live_precip_btn": "Nedbør",
       "live_sea_state_btn": "Søgang",
+      "live_visibility_btn": "Sigtbarhed",
       "live_course_btn": "Kurs",
       "live_fuel_btn": "Diesel",
       "live_water_btn": "Vand",
@@ -288,6 +289,7 @@
       "live_pressure_entry": "Lufttryk {{value}} hPa",
       "live_precip_entry": "Nedbør {{value}}",
       "live_sea_state_entry": "Søgang {{value}}",
+      "live_visibility_entry": "Sigtbarhed {{value}}",
       "live_course_entry": "Kurs {{course}}",
       "live_fuel_entry": "Diesel +{{liters}} L",
       "live_water_entry": "Vand +{{liters}} L",
@@ -298,6 +300,7 @@
       "live_temp_placeholder": "f.eks. 18",
       "live_precip_placeholder": "f.eks. let regn",
       "live_sea_state_placeholder": "f.eks. 3",
+      "live_visibility_placeholder": "f.eks. 10 km",
       "live_course_placeholder": "f.eks. 245",
       "live_fuel_placeholder": "Optankede liter",
       "live_water_placeholder": "Optankede liter",
@@ -339,6 +342,12 @@
       "event_wind_direction": "Vindretning",
       "event_wind_strength": "Vindstyrke",
       "event_sea_state": "Havets tilstand",
+      "event_visibility": "Sigtbarhed",
+      "event_visibility_placeholder": "f.eks. 10 km",
+      "weather_slider_unset": "—",
+      "weather_slider_pressure": "{{value}} hPa",
+      "weather_slider_sea_state": "Trin {{value}}",
+      "weather_slider_heel": "{{value}}°",
       "event_weather": "Vejret",
       "event_log": "Log (sm)",
       "event_gps": "GPS-position",
diff --git a/client/src/i18n/locales/de.json b/client/src/i18n/locales/de.json
index af7bb0e..ad51858 100644
--- a/client/src/i18n/locales/de.json
+++ b/client/src/i18n/locales/de.json
@@ -280,6 +280,7 @@
       "live_pressure_btn": "Luftdruck",
       "live_precip_btn": "Niederschlag",
       "live_sea_state_btn": "Seegang",
+      "live_visibility_btn": "Sichtweite",
       "live_course_btn": "Kurs",
       "live_fuel_btn": "Diesel",
       "live_water_btn": "Wasser",
@@ -288,6 +289,7 @@
       "live_pressure_entry": "Luftdruck {{value}} hPa",
       "live_precip_entry": "Niederschlag {{value}}",
       "live_sea_state_entry": "Seegang {{value}}",
+      "live_visibility_entry": "Sichtweite {{value}}",
       "live_course_entry": "Kurs {{course}}",
       "live_fuel_entry": "Diesel +{{liters}} L",
       "live_water_entry": "Wasser +{{liters}} L",
@@ -298,6 +300,7 @@
       "live_temp_placeholder": "z. B. 18",
       "live_precip_placeholder": "z. B. leichter Regen",
       "live_sea_state_placeholder": "z. B. 3",
+      "live_visibility_placeholder": "z. B. 10 km",
       "live_course_placeholder": "z. B. 245",
       "live_fuel_placeholder": "Nachgefüllte Liter",
       "live_water_placeholder": "Nachgefüllte Liter",
@@ -339,6 +342,12 @@
       "event_wind_direction": "Wind-Richtung",
       "event_wind_strength": "Windstärke",
       "event_sea_state": "Seegang",
+      "event_visibility": "Sichtweite",
+      "event_visibility_placeholder": "z. B. 10 km",
+      "weather_slider_unset": "—",
+      "weather_slider_pressure": "{{value}} hPa",
+      "weather_slider_sea_state": "Stufe {{value}}",
+      "weather_slider_heel": "{{value}}°",
       "event_weather": "Wetter",
       "event_log": "Logge (sm)",
       "event_gps": "GPS-Position",
diff --git a/client/src/i18n/locales/en.json b/client/src/i18n/locales/en.json
index 94383b6..cfdee67 100644
--- a/client/src/i18n/locales/en.json
+++ b/client/src/i18n/locales/en.json
@@ -280,6 +280,7 @@
       "live_pressure_btn": "Pressure",
       "live_precip_btn": "Precipitation",
       "live_sea_state_btn": "Sea state",
+      "live_visibility_btn": "Visibility",
       "live_course_btn": "Course",
       "live_fuel_btn": "Fuel",
       "live_water_btn": "Water",
@@ -288,6 +289,7 @@
       "live_pressure_entry": "Pressure {{value}} hPa",
       "live_precip_entry": "Precipitation {{value}}",
       "live_sea_state_entry": "Sea state {{value}}",
+      "live_visibility_entry": "Visibility {{value}}",
       "live_course_entry": "Course {{course}}",
       "live_fuel_entry": "Fuel +{{liters}} L",
       "live_water_entry": "Water +{{liters}} L",
@@ -298,6 +300,7 @@
       "live_temp_placeholder": "e.g. 18",
       "live_precip_placeholder": "e.g. light rain",
       "live_sea_state_placeholder": "e.g. 3",
+      "live_visibility_placeholder": "e.g. 10 km",
       "live_course_placeholder": "e.g. 245",
       "live_fuel_placeholder": "Liters refilled",
       "live_water_placeholder": "Liters refilled",
@@ -339,6 +342,12 @@
       "event_wind_direction": "Wind Dir",
       "event_wind_strength": "Wind Str",
       "event_sea_state": "Sea State",
+      "event_visibility": "Visibility",
+      "event_visibility_placeholder": "e.g. 10 km",
+      "weather_slider_unset": "—",
+      "weather_slider_pressure": "{{value}} hPa",
+      "weather_slider_sea_state": "State {{value}}",
+      "weather_slider_heel": "{{value}}°",
       "event_weather": "Weather",
       "event_log": "Log (nm)",
       "event_gps": "GPS Position",
diff --git a/client/src/i18n/locales/nb.json b/client/src/i18n/locales/nb.json
index d233ae2..083bfd6 100644
--- a/client/src/i18n/locales/nb.json
+++ b/client/src/i18n/locales/nb.json
@@ -280,6 +280,7 @@
       "live_pressure_btn": "Lufttrykk",
       "live_precip_btn": "Nedbør",
       "live_sea_state_btn": "Sjøgang",
+      "live_visibility_btn": "Sikt",
       "live_course_btn": "Kurs",
       "live_fuel_btn": "Diesel",
       "live_water_btn": "Vann",
@@ -288,6 +289,7 @@
       "live_pressure_entry": "Lufttrykk {{value}} hPa",
       "live_precip_entry": "Nedbør {{value}}",
       "live_sea_state_entry": "Sjøgang {{value}}",
+      "live_visibility_entry": "Sikt {{value}}",
       "live_course_entry": "Kurs {{course}}",
       "live_fuel_entry": "Diesel +{{liters}} L",
       "live_water_entry": "Vann +{{liters}} L",
@@ -298,6 +300,7 @@
       "live_temp_placeholder": "f.eks. 18",
       "live_precip_placeholder": "f.eks. lett regn",
       "live_sea_state_placeholder": "f.eks. 3",
+      "live_visibility_placeholder": "f.eks. 10 km",
       "live_course_placeholder": "f.eks. 245",
       "live_fuel_placeholder": "Påfylte liter",
       "live_water_placeholder": "Påfylte liter",
@@ -339,6 +342,12 @@
       "event_wind_direction": "Vindretning",
       "event_wind_strength": "Vindstyrke",
       "event_sea_state": "Havets tilstand",
+      "event_visibility": "Sikt",
+      "event_visibility_placeholder": "f.eks. 10 km",
+      "weather_slider_unset": "—",
+      "weather_slider_pressure": "{{value}} hPa",
+      "weather_slider_sea_state": "Grad {{value}}",
+      "weather_slider_heel": "{{value}}°",
       "event_weather": "Været",
       "event_log": "Logg (sm)",
       "event_gps": "GPS-posisjon",
diff --git a/client/src/i18n/locales/sv.json b/client/src/i18n/locales/sv.json
index 60b6fc4..5ac1905 100644
--- a/client/src/i18n/locales/sv.json
+++ b/client/src/i18n/locales/sv.json
@@ -280,6 +280,7 @@
       "live_pressure_btn": "Lufttryck",
       "live_precip_btn": "Nederbörd",
       "live_sea_state_btn": "Sjögang",
+      "live_visibility_btn": "Sikt",
       "live_course_btn": "Kurs",
       "live_fuel_btn": "Diesel",
       "live_water_btn": "Vatten",
@@ -288,6 +289,7 @@
       "live_pressure_entry": "Lufttryck {{value}} hPa",
       "live_precip_entry": "Nederbörd {{value}}",
       "live_sea_state_entry": "Sjögang {{value}}",
+      "live_visibility_entry": "Sikt {{value}}",
       "live_course_entry": "Kurs {{course}}",
       "live_fuel_entry": "Diesel +{{liters}} L",
       "live_water_entry": "Vatten +{{liters}} L",
@@ -298,6 +300,7 @@
       "live_temp_placeholder": "t.ex. 18",
       "live_precip_placeholder": "t.ex. lätt regn",
       "live_sea_state_placeholder": "t.ex. 3",
+      "live_visibility_placeholder": "t.ex. 10 km",
       "live_course_placeholder": "t.ex. 245",
       "live_fuel_placeholder": "Påfyllda liter",
       "live_water_placeholder": "Påfyllda liter",
@@ -339,6 +342,12 @@
       "event_wind_direction": "Vindriktning",
       "event_wind_strength": "Vindstyrka",
       "event_sea_state": "Havets tillstånd",
+      "event_visibility": "Sikt",
+      "event_visibility_placeholder": "t.ex. 10 km",
+      "weather_slider_unset": "—",
+      "weather_slider_pressure": "{{value}} hPa",
+      "weather_slider_sea_state": "Grad {{value}}",
+      "weather_slider_heel": "{{value}}°",
       "event_weather": "Väder",
       "event_log": "Log (sm)",
       "event_gps": "GPS-position",
diff --git a/client/src/services/csvExport.ts b/client/src/services/csvExport.ts
index 3c8e9f4..f79168e 100644
--- a/client/src/services/csvExport.ts
+++ b/client/src/services/csvExport.ts
@@ -78,7 +78,7 @@ export async function exportLogbookToCsv(logbookId: string, preloadedData?: { ya
     'Skipper Signature', 'Crew Signature',
     'Track Distance (nm)', 'Track Max Speed (kn)', 'Track Avg Speed (kn)', 'Motor Hours (h)',
     'Event Time', 'MgK Course', 'RwK Course',
-    'Wind Dir', 'Wind Str', 'Barometer (hPa)', 'Sea State',
+    'Wind Dir', 'Wind Str', 'Barometer (hPa)', 'Sea State', 'Visibility',
     'Current', 'Heel Angle', 'Sails/Motor', 'Log (nm)', 'Distance (nm)',
     'Latitude', 'Longitude', 'Remarks',
     'Freshwater Morning (L)', 'Freshwater Refilled (L)', 'Freshwater Evening (L)', 'Freshwater Consumption (L)',
@@ -129,7 +129,7 @@ export async function exportLogbookToCsv(logbookId: string, preloadedData?: { ya
         signS, signC,
         trackDist, trackMax, trackAvg, motorH,
         '', '', '',
-        '', '', '', '',
+        '', '', '', '', '',
         '', '', '', '', '',
         '', '', '',
         fwM, fwR, fwE, fwCons,
@@ -147,6 +147,7 @@ export async function exportLogbookToCsv(logbookId: string, preloadedData?: { ya
           trackDist, trackMax, trackAvg, motorH,
           ev.time || '', ev.mgk || '', ev.rwk || '',
           ev.windDirection || '', ev.windStrength || '', ev.windPressure || '', ev.seaState || '',
+          ev.visibility || '',
           ev.current || '', ev.heel || '', ev.sailsOrMotor || '', ev.logReading || '', ev.distance || '',
           ev.gpsLat || '', ev.gpsLng || '', ev.remarks || '',
           fwM, fwR, fwE, fwCons,
diff --git a/client/src/utils/formatEventSummary.test.ts b/client/src/utils/formatEventSummary.test.ts
index e2e3d3d..3ece001 100644
--- a/client/src/utils/formatEventSummary.test.ts
+++ b/client/src/utils/formatEventSummary.test.ts
@@ -24,6 +24,7 @@ const t = (key: string, opts?: Record<string, unknown>) => {
     'logs.live_event_generic': 'Event',
     'logs.live_temp_entry': `Temperature ${opts?.temp} °C`,
     'logs.live_pressure_entry': `Pressure ${opts?.value} hPa`,
+    'logs.live_visibility_entry': `Visibility ${opts?.value}`,
     'logs.live_wind_entry': `Wind ${opts?.value}`,
     'logs.live_photo_entry': `Photo: ${opts?.caption}`,
     'logs.live_photo_entry_plain': 'Photo captured',
@@ -94,6 +95,15 @@ describe('formatEventSummary', () => {
     expect(formatEventSummary(event, t)).toBe('Pressure 1013 hPa')
   })
 
+  it('formats visibility entry', () => {
+    const event = normalizeLogEvent({
+      time: '09:00',
+      remarks: LIVE_EVENT_CODES.VISIBILITY,
+      visibility: '10 km'
+    })
+    expect(formatEventSummary(event, t)).toBe('Visibility 10 km')
+  })
+
   it('formats SOG entry', () => {
     const event = normalizeLogEvent({
       time: '10:15',
diff --git a/client/src/utils/formatEventSummary.ts b/client/src/utils/formatEventSummary.ts
index ecdec45..e94a233 100644
--- a/client/src/utils/formatEventSummary.ts
+++ b/client/src/utils/formatEventSummary.ts
@@ -81,6 +81,10 @@ export function formatEventSummary(event: LogEventPayload, t: TFunction): string
     return t('logs.live_sea_state_entry', { value: event.seaState })
   }
 
+  if (code === LIVE_EVENT_CODES.VISIBILITY && event.visibility) {
+    return t('logs.live_visibility_entry', { value: event.visibility })
+  }
+
   if (code && !code.startsWith('__live:')) {
     return code
   }
@@ -92,6 +96,7 @@ export function formatEventSummary(event: LogEventPayload, t: TFunction): string
     parts.push([event.windDirection, event.windStrength].filter(Boolean).join(' '))
   }
   if (event.windPressure) parts.push(`${t('logs.event_wind_pressure')}: ${event.windPressure}`)
+  if (event.visibility) parts.push(`${t('logs.event_visibility')}: ${event.visibility}`)
   if (event.gpsLat && event.gpsLng) {
     parts.push(`${event.gpsLat}, ${event.gpsLng}`)
   }
diff --git a/client/src/utils/liveEventCodes.ts b/client/src/utils/liveEventCodes.ts
index 5bf9b00..1519a23 100644
--- a/client/src/utils/liveEventCodes.ts
+++ b/client/src/utils/liveEventCodes.ts
@@ -9,7 +9,8 @@ export const LIVE_EVENT_CODES = {
   COURSE: '__live:course',
   WIND: '__live:wind',
   PRESSURE: '__live:pressure',
-  SEA_STATE: '__live:sea_state'
+  SEA_STATE: '__live:sea_state',
+  VISIBILITY: '__live:visibility'
 } as const
 
 export type LiveEventCode = (typeof LIVE_EVENT_CODES)[keyof typeof LIVE_EVENT_CODES]
diff --git a/client/src/utils/logEntryPayload.ts b/client/src/utils/logEntryPayload.ts
index 52e0fb0..5f7b6df 100644
--- a/client/src/utils/logEntryPayload.ts
+++ b/client/src/utils/logEntryPayload.ts
@@ -12,6 +12,7 @@ export interface LogEventPayload {
   windDirection: string
   windStrength: string
   seaState: string
+  visibility: string
   weatherIcon: string
   current: string
   heel: string
@@ -75,7 +76,7 @@ export function joinTimeHHMM(hours: string, minutes: string): string {
 
 const LOG_EVENT_FIELDS: (keyof LogEventPayload)[] = [
   'time', 'mgk', 'rwk', 'windPressure', 'windDirection', 'windStrength', 'seaState',
-  'weatherIcon', 'current', 'heel', 'sailsOrMotor', 'logReading', 'distance',
+  'visibility', 'weatherIcon', 'current', 'heel', 'sailsOrMotor', 'logReading', 'distance',
   'gpsLat', 'gpsLng', 'remarks'
 ]
 
@@ -91,6 +92,7 @@ export function normalizeLogEvent(event: Partial<LogEventPayload> | Record<strin
     windDirection: normalizeWindDirectionString(String(e.windDirection ?? '')),
     windStrength: '',
     seaState: '',
+    visibility: '',
     weatherIcon: '',
     current: '',
     heel: '',
diff --git a/client/src/utils/openWeatherMap.test.ts b/client/src/utils/openWeatherMap.test.ts
index 4f63913..3dc0281 100644
--- a/client/src/utils/openWeatherMap.test.ts
+++ b/client/src/utils/openWeatherMap.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import {
+  formatOwmVisibilityMeters,
   formatWindStrengthBeaufort,
   mpsToBeaufort,
   parseOwmCurrentWeather
@@ -13,15 +14,23 @@ describe('openWeatherMap', () => {
     expect(formatWindStrengthBeaufort(5)).toBe('3 Bft (5.0 m/s)')
   })
 
+  it('formats visibility in metres', () => {
+    expect(formatOwmVisibilityMeters(500)).toBe('500 m')
+    expect(formatOwmVisibilityMeters(10000)).toBe('10 km')
+    expect(formatOwmVisibilityMeters(2500)).toBe('2.5 km')
+  })
+
   it('parses OWM current weather payload', () => {
     const parsed = parseOwmCurrentWeather({
       wind: { speed: 8.5, deg: 225 },
       main: { pressure: 1018, temp: 17.4 },
+      visibility: 10000,
       weather: [{ icon: '04d', description: 'Bedeckt' }]
     })
     expect(parsed.windDirection).toBe('SW')
     expect(parsed.windStrength).toBe('5 Bft (8.5 m/s)')
     expect(parsed.windPressure).toBe('1018')
+    expect(parsed.visibility).toBe('10 km')
     expect(parsed.tempC).toBe('17.4')
     expect(parsed.precipText).toBe('Bedeckt')
     expect(parsed.weatherIcon).toBe('04d')
diff --git a/client/src/utils/openWeatherMap.ts b/client/src/utils/openWeatherMap.ts
index a887a8e..2ef5f35 100644
--- a/client/src/utils/openWeatherMap.ts
+++ b/client/src/utils/openWeatherMap.ts
@@ -1,9 +1,14 @@
 import { degreesToCardinal } from './courseAngle.js'
+import { formatVisibilityMeters } from './weatherMetrics.js'
+
+/** @deprecated Use formatVisibilityMeters */
+export const formatOwmVisibilityMeters = formatVisibilityMeters
 
 export interface ParsedOwmCurrent {
   windDirection: string
   windStrength: string
   windPressure: string
+  visibility: string
   tempC: string | null
   precipText: string | null
   weatherIcon: string | null
@@ -57,10 +62,17 @@ export function parseOwmCurrentWeather(data: Record<string, unknown>): ParsedOwm
 
   const weatherIcon = firstWeather?.icon?.trim() ? firstWeather.icon.trim() : null
 
+  const visibilityRaw = data.visibility
+  const visibility =
+    typeof visibilityRaw === 'number'
+      ? formatVisibilityMeters(visibilityRaw)
+      : ''
+
   return {
     windDirection,
     windStrength,
     windPressure,
+    visibility,
     tempC,
     precipText,
     weatherIcon
diff --git a/client/src/utils/weatherMetrics.test.ts b/client/src/utils/weatherMetrics.test.ts
new file mode 100644
index 0000000..d21c5ce
--- /dev/null
+++ b/client/src/utils/weatherMetrics.test.ts
@@ -0,0 +1,45 @@
+import { describe, expect, it } from 'vitest'
+import {
+  formatPressureHpa,
+  formatSeaState,
+  formatVisibilityMeters,
+  parseHeelDeg,
+  parsePressureHpa,
+  parseSeaState,
+  parseVisibilityMeters,
+  visibilityMetersFromStepIndex,
+  visibilityStepIndex
+} from './weatherMetrics.js'
+
+describe('weatherMetrics', () => {
+  it('parses and formats pressure', () => {
+    expect(parsePressureHpa('1014')).toBe(1014)
+    expect(parsePressureHpa('1014 hPa')).toBe(1014)
+    expect(parsePressureHpa('')).toBeNull()
+    expect(formatPressureHpa(1014)).toBe('1014')
+  })
+
+  it('parses and formats sea state', () => {
+    expect(parseSeaState('3')).toBe(3)
+    expect(parseSeaState('leicht')).toBeNull()
+    expect(formatSeaState(3)).toBe('3')
+  })
+
+  it('parses and formats heel', () => {
+    expect(parseHeelDeg('12')).toBe(12)
+    expect(parseHeelDeg('12°')).toBe(12)
+  })
+
+  it('parses visibility with units', () => {
+    expect(parseVisibilityMeters('10 km')).toBe(10000)
+    expect(parseVisibilityMeters('500 m')).toBe(500)
+    expect(formatVisibilityMeters(10000)).toBe('10 km')
+    expect(formatVisibilityMeters(500)).toBe('500 m')
+  })
+
+  it('maps visibility to log steps', () => {
+    expect(visibilityStepIndex(10000)).toBe(8)
+    expect(visibilityMetersFromStepIndex(8)).toBe(10000)
+    expect(visibilityMetersFromStepIndex(0)).toBe(0)
+  })
+})
diff --git a/client/src/utils/weatherMetrics.ts b/client/src/utils/weatherMetrics.ts
new file mode 100644
index 0000000..20aa63b
--- /dev/null
+++ b/client/src/utils/weatherMetrics.ts
@@ -0,0 +1,118 @@
+/** Barometric pressure (hPa), typical marine range. */
+export const PRESSURE_MIN_HPA = 960
+export const PRESSURE_MAX_HPA = 1050
+export const PRESSURE_DEFAULT_HPA = 1013
+
+/** Douglas sea state 0–9. */
+export const SEA_STATE_MIN = 0
+export const SEA_STATE_MAX = 9
+
+/** Heel angle in degrees. */
+export const HEEL_MIN_DEG = 0
+export const HEEL_MAX_DEG = 45
+
+/** Log-spaced visibility steps in metres; index 0 = not set. */
+export const VISIBILITY_STEPS_M = [
+  0, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000
+] as const
+
+function parseDecimal(value: string): number | null {
+  const trimmed = value.trim().replace(',', '.')
+  if (!trimmed) return null
+  const n = Number(trimmed)
+  return Number.isFinite(n) ? n : null
+}
+
+export function clamp(n: number, min: number, max: number): number {
+  return Math.min(max, Math.max(min, n))
+}
+
+export function parsePressureHpa(value: string): number | null {
+  const raw = value.trim().replace(/\s*hPa\s*$/i, '')
+  if (!raw) return null
+  const n = parseDecimal(raw)
+  if (n == null) return null
+  return clamp(Math.round(n), PRESSURE_MIN_HPA, PRESSURE_MAX_HPA)
+}
+
+export function formatPressureHpa(hpa: number): string {
+  return String(clamp(Math.round(hpa), PRESSURE_MIN_HPA, PRESSURE_MAX_HPA))
+}
+
+export function parseSeaState(value: string): number | null {
+  const raw = value.trim()
+  if (!raw) return null
+  const n = parseDecimal(raw)
+  if (n == null) return null
+  if (!Number.isInteger(n) || n < SEA_STATE_MIN || n > SEA_STATE_MAX) return null
+  return n
+}
+
+export function formatSeaState(level: number): string {
+  return String(clamp(Math.round(level), SEA_STATE_MIN, SEA_STATE_MAX))
+}
+
+export function parseHeelDeg(value: string): number | null {
+  const raw = value.trim().replace(/°\s*$/, '')
+  if (!raw) return null
+  const n = parseDecimal(raw)
+  if (n == null) return null
+  return clamp(Math.round(n), HEEL_MIN_DEG, HEEL_MAX_DEG)
+}
+
+export function formatHeelDeg(deg: number): string {
+  return String(clamp(Math.round(deg), HEEL_MIN_DEG, HEEL_MAX_DEG))
+}
+
+export function parseVisibilityMeters(value: string): number | null {
+  const raw = value.trim()
+  if (!raw) return null
+
+  const kmMatch = raw.match(/^([\d.,]+)\s*km$/i)
+  if (kmMatch) {
+    const km = parseDecimal(kmMatch[1])
+    return km == null ? null : Math.round(km * 1000)
+  }
+
+  const mMatch = raw.match(/^([\d.,]+)\s*m$/i)
+  if (mMatch) {
+    const m = parseDecimal(mMatch[1])
+    return m == null ? null : Math.round(m)
+  }
+
+  const bare = parseDecimal(raw)
+  if (bare == null) return null
+  return Math.round(bare >= 100 ? bare : bare)
+}
+
+export function formatVisibilityMeters(meters: number): string {
+  if (meters <= 0) return ''
+  if (meters >= 1000) {
+    const km = meters / 1000
+    const rounded = Math.round(km * 10) / 10
+    return Number.isInteger(rounded) ? `${rounded} km` : `${rounded.toFixed(1)} km`
+  }
+  return `${Math.round(meters)} m`
+}
+
+export function visibilityStepIndex(meters: number): number {
+  if (meters <= 0) return 0
+  let bestIdx = 1
+  let bestDiff = Math.abs(VISIBILITY_STEPS_M[1] - meters)
+  for (let i = 2; i < VISIBILITY_STEPS_M.length; i++) {
+    const diff = Math.abs(VISIBILITY_STEPS_M[i] - meters)
+    if (diff < bestDiff) {
+      bestDiff = diff
+      bestIdx = i
+    }
+  }
+  return bestIdx
+}
+
+export function visibilityMetersFromStepIndex(index: number): number {
+  const i = clamp(Math.round(index), 0, VISIBILITY_STEPS_M.length - 1)
+  return VISIBILITY_STEPS_M[i]
+}
+
+/** Re-export for OWM formatting consistency. */
+export { formatOwmVisibilityMeters } from './openWeatherMap.js'