Tuesday, July 21, 2026 · Hour-by-hour forecast updated 6:23 AM MST
76°F and clear at peak. Wind 3 mph from the NE, dew point 72°F.
FitCast texts you tomorrow's hour-by-hour forecast every evening so you know exactly what to expect before your alarm goes off.
Based on today's FitScore analysis, the best time to run is 5 AM with a peak FitScore of 51/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Phoenix are November, December, January, February, March. The most challenging months are typically June, July, August. Temperatures exceed 110°F regularly. Running after 8 AM is genuinely dangerous — pre-dawn only.
FitScore rates each hour from 0–100 for outdoor exercise based on temperature, humidity, dew point, wind, precipitation probability, UV index, and air quality. Higher scores mean better conditions.