Running conditions
Is It Too Hot to Run in San Jose Today?
Use the environmental risk signals below to adjust timing, intensity, shade, and recovery.
Forecast conditions
Poor
Shorten the session and favor shade or cooler hours.
Heat index
91°F
WBGT est.
26.3°C
UV
1.0
Hourly running conditions
| Time | Temperature | Heat index | Estimated WBGT | UV | Risk |
|---|---|---|---|---|---|
| 5 PM | 93°F | 91°F | 26.3°C | 1.0 | High |
| 8 AM | 70°F | 75°F | 17.9°C | 0.2 | Low |
| 10 AM | 88°F | 85°F | 24.0°C | 2.2 | Moderate |
| 12 PM | 94°F | 90°F | 25.6°C | 5.6 | High |
| 2 PM | 97°F | 95°F | 26.3°C | 5.9 | High |
| 4 PM | 95°F | 92°F | 25.8°C | 2.7 | High |
| 6 PM | 89°F | 86°F | 24.2°C | 0.3 | Moderate |
| 9 AM | 83°F | 80°F | 21.7°C | 0.8 | Moderate |
Three-day forecast
Sunday
Heat index up to 98°F
100°F / 69°F
HighMonday
Heat index up to 95°F
97°F / 67°F
HighTuesday
Heat index up to 96°F
98°F / 69°F
HighKnow when it's safer to run
HeatGuard can notify you as conditions improve and keep this location saved.