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 StoreSaxon Switzerland National Park in the Elbe Sandstone Mountains of eastern Germany contains a landscape unlike anywhere else in central Europe — forests of eroded sandstone towers, arches, and labyrinthine rock formations that rise from the forested valleys of the Elbe River. The Bastei bridge and the Schrammsteine rock formations are the most recognizable landmarks, and when autumn fog fills the Elbe valley below while the sandstone towers emerge above the mist, the result is one of the most iconic landscape photography compositions in all of Europe.
The Bastei viewpoint at 305 meters, where the famous 19th-century sandstone bridge crosses between the towers, is the primary fog photography location. On strong inversion mornings, the Elbe valley below is completely hidden by fog while the Bastei towers and the distant Schrammsteine stand brilliantly above the white cloud. The Königstein Fortress, visible across the fog sea on the opposite bank, adds a dramatic architectural element. October and November produce the most reliable valley fog events. Pre-dawn arrival — before the first tourist buses — is essential; the viewpoint is very crowded by 8am on clear mornings.
Saxon Switzerland fog is Elbe valley radiation fog — cold, dense air pools in the river valley overnight under clear skies and calm winds. The valley sits at about 120 meters elevation while the Bastei towers rise to 305 meters, giving a vertical separation of nearly 200 meters through the inversion. When overnight temperatures in the Elbe valley drop below 5°C with humidity above 90% and calm winds, a valley fog event covering the river and lowlands is almost certain by 5am. The fog typically clears by 9 to 10am as the sun heats the valley walls.