Runner on trail at golden hour

Find your best 2-hour 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.

Coming soon to the App Store
For runners, riders, hikers

One window, picked for what you're doing today

Tell it your sport. It ranks today's hours against what that sport actually needs, then points at the best two-hour stretch.

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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.

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More than one number

Apparent temperature, dew point, wind, gusts, and what's coming in the next two hours of precipitation. Weighed together, the way you actually feel them.

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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.

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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 alerts. 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

1

Pick your sport

Running, cycling, or hiking. Scoring shifts to match.

2

See today's window

A single two-hour block, the score behind it, and what the conditions look like through it.

3

Head out

Or check tomorrow if today isn't it. That's the whole flow.