The Running Weather Index ranks U.S. cities for running conditions using temperature, wind, cloud cover, humidity, and precipitation — scored 1–10 and updated daily from National Weather Service data. Red and maroon = best. Blue = worst.
Search any U.S. city to see its Running Weather Index score for the selected day.
The Running Weather Index scores each location from 1 to 10 using National Weather Service forecast data at 2.5km resolution across the contiguous United States. It is updated daily and reflects conditions most runners describe as ideal for outdoor running.
Six factors are scored and combined:
A score of 10 means near-perfect running conditions. A score of 1 means conditions are poor — too hot, too humid, or too wet for comfortable running.