The weather app for paved miles
Knowday reads the wind, the gusts, and the road spray — then tells you the best window to ride, and which way the wind will push you home.
Today · your ride
What matters on the bike
Wind — and the ride home
Wind is the ride. Knowday reads both the speed and the direction, so it can warn you when an easy tailwind out becomes a grind back — the thing a plain forecast never tells you.
Gusts that move the bike
Steady wind you settle into; a hard cross-gust is what jerks the wheel. Knowday tracks peak gusts and calls a hard Skip when they cross into sketchy.
Road spray, not just rain odds
Even a passed shower leaves a wet, gritty road and a soaked back. Knowday watches the rain window so you pick the dry stretch.
The wind-chill you'll feel at speed
25 mph makes a cool morning colder. Knowday reads the feels-like with wind-chill folded in, so you dress for the descent, not the driveway.
How it works
It scores wind speed and direction, gust peaks, the feels-like with wind-chill, the rain window, and humidity — and leans hardest on the wind, because that's what decides a road ride.
Two honest limits: it reads weather, not traffic or road work — plan the route yourself — and it flags likely storms, not lightning — if it's rumbling, don't start.
Road cycling 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.