Caution!

The National Weather Service considers it dangerous to exercise when the heat and humidity meet (or exceed) the below combinations.


HEAT / HUMIDITY

86° F / 90%
88° F / 80%
90° F / 70%
92° F / 60%
94° F / 55%
96° F / 45%
98° F / 40%

(See noaa.gov for the complete chart.)