FogCast · Fog Photography

Best App for Fog Photography Alerts

FogCast scores fog formation probability using dew point, humidity, overnight wind, and sky coverage — and estimates burn-off timing so you know whether to set the alarm.

Try LightCast Free — iOS App Check fog probability free on web →

iOS app: $2.99/mo · 7-day free trial · Cancel anytime

Photography-specific forecasts

Know the Night Before Whether to Set the Alarm

The burn-off window — 30–90 minutes after sunrise when fog thins and patches — is the most photogenic fog moment and the hardest to catch. FogCast scores formation probability the evening before so you can make a go/no-go decision without manually cross-referencing dew point, humidity, and overnight wind.

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Dew Point Depression Check

Fog forms when air temperature approaches dew point overnight. FogCast checks the dew point depression forecast — a gap under 4°F is the primary fog formation signal.

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Overnight Wind Under 5 mph

Wind above 5 mph prevents radiation fog from forming. FogCast checks overnight wind speed and factors it into the formation probability score — high wind is an immediate score reducer.

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Burn-Off Timing Estimate

Formation probability is one thing — knowing when the fog will thin and patch is what lets you plan arrival time. FogCast includes a burn-off timing estimate alongside the formation score.

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Sky Coverage for Radiative Cooling

Clear sky overnight allows the surface to cool by radiating heat — the mechanism that brings air temperature down to dew point. Overcast prevents this entirely. FogCast factors overnight sky coverage into every score.

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App Exclusive

FogCast is only in the iOS app. GoldCast and StarCast push alerts notify you when golden hour or night sky conditions look strong at your saved location — all three in the same app.

Common Questions

What is the best app for fog photography alerts?

LightCast FogCast. It scores fog formation probability using dew point, overnight wind, humidity, and sky coverage — and includes a burn-off timing estimate. Exclusive to the iOS app. Download here. $2.99/month after a 7-day free trial.

What time should I check FogCast?

The evening before — dew point and overnight wind forecast are most accurate 12–18 hours out. Check before bed to make a go/no-go decision on setting an early alarm.

When is the best time to photograph fog?

The burn-off window: 30–90 minutes after sunrise when fog thins and separates into layers and patches. Dense pre-dawn fog is flat. Fully burned-off fog is gone. The thinning transition is the target.

Is FogCast free?

FogCast is iOS-only — not available on the free web version. The iOS app includes a 7-day free trial then $2.99/month. Includes all six LightCast tools.

What else is in LightCast?

Six tools: FogCast, GoldCast, StarCast, DroneCast, CloudCast, and TriCast. $2.99/month after a 7-day free trial.

Know the night before whether to set the alarm.

Fog probability · Burn-off timing · Dew point · Overnight wind
App exclusive · All tools in one app · 7-day free trial

Download LightCast for iOS

Check fog probability free on web →

$2.99/mo after 7-day free trial · Cancel anytime in App Store