The weather app for the dirt
Knowday models the soil near you and the last day's rain — then tells you whether the trail is prime, dusty, or too soft to ride without tearing it up.
Today · your trail
What matters on the trail
Is the dirt rideable?
This is the one most apps miss. Knowday models the soil moisture near you and reads it as tacky-and-fast, dusty-and-loose, or too-wet — and calls a hard Skip when it's soft enough to rut.
How recently it rained
A trail that soaked overnight rides slick under a blue sky. Knowday watches the last 24 hours of rain, not just the sky right now — so you know if it's had time to set up.
Don't ride it muddy
Riding a soft trail tears ruts that last all season. When the soil's over the line, Knowday says Skip — for the trail's sake, not just yours.
Heat and wind for the climb
The feels-like for the effort and the wind for the exposed ridgelines — the comfort reads that round out a long ride.
How it works
Soil moisture is the deciding signal — it's modeled, not sensed, so Knowday is upfront: the dirt is read near you, not measured on your exact trail, and clay holds water longer than the model assumes. Pair it with a quick check of local trail reports.
The 24-hour rain, feels-like, and wind round out the call.
Mountain biking 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.