Scoring

Weights

Daylight 40%

Temperature 20%

Precipitation 20%

Wind 10%

Humidity 5%

UV index 5%

Normalised across the categories above.

Preferences

Ideal feels-like 10°C

Wind tolerance 10 km/h

Window length 1 h

Show only daylight hours

When to run?

Best running windows for the day you pick, based on weather.

Day:

Pick a location to get started.

Best windows

Forecast

great good ok poor

Weather: Open-Meteo Forecast API · Geocoding: Open-Meteo Geocoding API · Browser APIs: MDN
Built with HTML, CSS, vanilla JavaScript · Built with Claude Code (Anthropic's Claude AI).