What the app shows you
Full FogCast score, fog type, chase-or-skip verdict, and 10-day outlook — all in the app.
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Know before you drive: FogCast checks the conditions that produce photogenic fog
Get more than a snapshot of current conditions. The LightCast app unlocks everything to plan ahead
Humidity alone isn't enough. Wind alone isn't enough. Cloud cover alone isn't enough. Photogenic valley fog requires several conditions to line up at once, and most weather apps don't read them together.
Set a FogCast threshold once. The app will alert you when conditions at your saved locations look promising, so you're not manually checking at 4am.
Don't waste a sunrise drive. Check FogCast before you leave.
Download on the App StoreDeath Valley is the hottest and driest place in North America, and true valley fog here is rare — but that rarity is precisely what makes it extraordinary. When unusual moisture pushes in from the Gulf of Mexico or a Pacific storm system drops the valley floor temperature to near the dew point, a thin, ghostly mist can settle over Badwater Basin and the salt flats at 86 meters below sea level. The surreal quality of fog over one of the earth's most alien landscapes is unlike anything else in photography.
Zabriskie Point and Dante's View offer above-the-valley perspectives on rare fog events. Badwater Basin itself is the most dramatic location when mist sits on the salt polygons. The Mesquite Flat Sand Dunes produce spectacular photography when a morning ground mist rolls across the dunes before sunrise. Winter and early spring — December through March — offer the only realistic window when night temperatures can approach the dew point. Most years produce only a handful of true fog mornings.
Death Valley fog is an exceptional event requiring very unusual atmospheric conditions: overnight temperatures near or below 5°C at Badwater (itself rare), high relative humidity from a strong Pacific or Gulf moisture plume, and absolutely no wind. Monitor the valley floor temperature closely — if it's within 3°C of the dew point by midnight in winter, a thin mist over the salt flats by dawn is possible.