The weather app for the light
Knowday reads the golden hour, the cloud drama overhead, and how clear the air is — then tells you when today's light is worth heading out for.
Today · your light
What matters for the shot
Golden-hour light
The hour after sunrise and before sunset is the whole game. Knowday reads how much of the golden window is clear, so you know whether the warm light will actually land.
Cloud for drama
A flat blue sky is boring; full overcast is grey. Knowday reads for the in-between — the broken cloud that catches color and gives a landscape its sky.
Clear air, not haze
Haze flattens a distant ridge to grey mush. Knowday reads the visibility so you know whether the far layers will hold their detail.
Wind for long exposures
A breeze shakes the tripod and smears the leaves in a long exposure. Knowday reads the wind so you know if a slow shutter is even on the table.
How it works
It scores the golden-hour fraction, cloud cover tuned for drama, the wind for long exposures, and visibility for haze — the light, not the comfort.
One honest limit: cloud is modeled, so the exact sky is always a guess — and blue hour shifts fast, so get into position early.
Photography is one of fourteen plans Knowday reads — walks and rides, the lawn, the garden, camping, the night sky, and the water.
See all plansNo catch
Free to use. No sign-up. Your location is only used to fetch your forecast.