Heat Index Calculator
The heat index combines air temperature and relative humidity to determine the human-perceived equivalent temperature. High humidity prevents sweat from evaporating, making it feel much hotter than the actual temperature.
Inputs
Results
Feels Like
99.7F
Danger Level
Extreme Caution
Recommendation
Heat cramps and heat exhaustion possible. Limit outdoor activity and drink plenty of water.
Heat Index Details
| Detail | Value |
|---|---|
| Air Temperature | 90F |
| Relative Humidity | 60% |
| Heat Index | 99.7F (37.6C) |
| Feels Like Increase | +9.7F |
| Danger Level | Extreme Caution |