What the app shows you
Full FogCast score, fog type, chase-or-skip verdict, and 10-day outlook — all in the app.
Get LightCast Suite on iOS
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 StorePlitvice Lakes National Park in Croatia is a cascade of 16 terraced lakes connected by waterfalls and travertine barriers in a forested karst valley. The park's turquoise lakes — their color produced by minerals and algae — and the surrounding beech and fir forest create a landscape of unusual beauty. In autumn and early morning, fog sits over the lakes in the enclosed valley in a way that completely transforms the character of the place, softening the waterfalls and adding atmospheric depth to the lake corridors.
The upper lakes viewpoints and the Veliki Slap waterfall area are the most dramatic fog photography locations. When mist sits on the upper lakes at dawn, the wooden boardwalks disappearing into fog over electric-blue water are extraordinary. The lower lakes cascade area is best in fog from above, shooting down the waterfall chain through the mist-filled valley. October is the single best month — peak autumn color in the beeches, cooler overnight temperatures that produce reliable lake fog, and significantly fewer visitors than summer. The park opens early in autumn, allowing pre-dawn access on the boardwalks.
Plitvice Lakes fog is cold-air drainage fog forming in the enclosed valley bottom. The surrounding karst plateaus drain cold air into the lake basin overnight, and the continuous moisture from the many waterfalls and water surfaces means humidity in the valley bottom is almost always near saturation. On clear, calm nights in September and October when temperatures drop below 8°C, dense lake fog forms by 5am. The fog is usually 2 to 5 meters deep on the water surface and 10 to 20 meters deep in the valley corridors between lakes.