Find your best outdoor window to run, ride, or hike.
A thermometer can't tell you when to go out today. GoWindow looks at every daylight hour and picks the one that actually fits what you're doing.
One window, picked for what you're doing today
Tell it your sport and how long you want to be out — 1 to 4 hours. It ranks the next three days against what that sport actually needs, then points at the best stretch.
Different sport, different score
Heat and dew point matter most for running. Wind and gusts decide a ride. UV and visibility carry more weight on a hike. The scoring changes with the activity.
More than one number
Apparent temperature, dew point, wind, gusts, and what's coming in the next couple of hours of precipitation. Weighed together, the way you actually feel them.
The risks a forecast tends to bury
UV load, heat stress, thunderstorm timing, and air quality when smoke or haze are around. If conditions get risky, the score moves.
Open it, see the window, go
Today's window is right there on the first screen. No scrubbing through hourly charts to figure out what it means.
What we look at
Comfort
Apparent temperature, dew point, wind, gusts. Whether the air outside is the kind you want to move in.
Hazards
Precipitation timing, UV, heat stress (WBGT), thunderstorm timing. The stuff that turns a planned session into a bad idea.
Air
AQI for outdoor effort, with attention to smoke and haze days. It's one signal among many, not the headline.
How it works
Pick your sport
Running, cycling, or hiking, with a window length from 1 to 4 hours. Scoring shifts to match.
See today's window
A single block at the length you picked, the score behind it, and what the conditions look like through it.
Head out
Or check tomorrow if today isn't it. That's the whole flow.
Pro for the places you actually use
Save up to 10 places, score all three sports together, and see every hour of the next three days.
10 saved places
Keep home, parks, trailheads, offices, and trip spots ready.
All three sports
Running, cycling, and hiking scored together, with multi-sport widgets so every score is one glance away.
Hour-by-hour detail
Tap any hour to see what's helping or hurting the score across the full three-day forecast.
GoWindow for your sport
Scoring tuned to what your activity actually needs.
Runners
Dew point, apparent temperature, wind, and air quality — scored together for runners, not averaged for everybody.
Cyclists
Wind, gusts, precipitation timing, and temperature — scored for cyclists who need to know before they clip in.
Hikers
UV, temperature, thunderstorm timing, and air quality — scored for hikers who spend hours above the treeline.