Heat Index Calculator

Heat index calculator calculates how your body responds to the temperature, and feels the heat, despite the air temperature.

Since it is indexing for heat, this heat index calculator works for 80°F and above.
For example, if the air temperature is 85 °F with relative humidity of 95%, the heat index is 104°F, which means the actual heat that the human body would react to is 104°F rather than 85°F.