EAI WebApp v2.4
Weather/ NOTAMs & E6B Tools

Heat Index Effects

The heat index is a precise calculation of how hot it really feels when the affects of humidity are added to high air temperatures.

Heat Index Calculator
Temp (OAT) °F °C
Rel. Humidity %
Temp (OAT) °F °C
Heat Index °F °C

Note: use temperatures above 79 °F or 26 °C and relative humidity between 40 and 100 %.

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See the image below for a tabular representation of the heat index.

Heat Index Factor


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