The weather app for the dirt
Knowday models soil moisture near you and the last day's rain — forecast context for trail readiness, not a surface observation. Inspect the trail, check local reports, and use your judgment before you ride.
Today · your trail
What matters on the trail
What does the soil model suggest?
This is the one most apps miss. Knowday models soil moisture near you from recent rain and drying — forecast context, not a trail sensor. Inspect the trail, check local reports, and use your judgment before you ride.
How recently it rained
Overnight rain can raise modeled trail-moisture risk even under a blue sky. Knowday watches the last 24 hours of rain; inspect the trail and check local reports.
Don't ride it muddy
Riding a fragile trail tears ruts that last all season. When recent rain and modeled moisture look too high, Knowday says Skip — for the trail's sake, not just yours. Still confirm on site.
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 sixteen 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. Knowday sends an area-level location to Open-Meteo to fetch your forecast.