GearCheck

Know exactly what to wear for today's run

GearCheck turns your local weather into a concrete running outfit — base layers, outer layers, bottoms, and accessories — using a transparent rule engine, not guesswork. It accounts for wind chill, heat index, rain, sun, and your personal cold- or warm-running preference.

How it works

1. Share your location — it reads temperature, wind, humidity, UV, and sky.
2. Set whether you run cold or warm with a single slider.
3. Get your outfit for today, plus the conditions the engine reacted to.

Frequently asked questions

What should I wear running in cold weather?

Below about 40°F, GearCheck recommends a thermal base layer, a jacket, full-length tights, a warm hat, and gloves — adding a neck warmer below 25°F. It factors in wind chill, so a windy 35°F day dresses colder than a calm one.

What should I wear running in the rain?

Rain saps body heat, so GearCheck applies a wet-chill penalty to the effective temperature and favors a water-resistant outer layer plus a brimmed cap to keep rain out of your eyes.

Shorts or tights — when do I switch?

Shorts once the effective temperature reaches about 55°F, tights below it. You can nudge the cutoff with the “I run cold / I run warm” slider if you always feel warmer or colder than average.

When do I need sunscreen and sunglasses?

On warm, sunny days with real UV. GearCheck adds sunscreen when it's warm, the sky lets the sun through, and the UV index is meaningful, and suggests sunglasses when UV is elevated.

Is GearCheck free? Do I need an account?

Yes, it's free, and no account is required. It reads your local weather in the browser and gives a recommendation instantly. It also installs as a Progressive Web App and shows your last reading offline.