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Use this Heat Index Calculator to calculate the heat index (HI) based on air temperature (T) and relative humidity (RH). How to use this calculator. Choose the temperature unit between degrees Fahrenheit, degrees Celsius, or Kelvin. Enter the air temperature.
The following coefficients can be used to determine the heat index when the temperature is given in degrees Celsius, where HI = heat index (in degrees Celsius) T = ambient dry-bulb temperature (in degrees Celsius) R = relative humidity (percentage value between 0 and 100)
This calculator estimates heat index temperature felt by the human body based on the actual measured air temperature together with humidity level or dew point.
12 Μαΐ 2022 · In practice, the simple formula is computed first and the result averaged with the temperature. If this heat index value is 80 degrees F or higher, the full regression equation along with any adjustment as described above is applied.
25 Αυγ 2023 · Choose the appropriate calculator and enter the values. Then click "Calculate". * Please note: The Heat Index calculation may produce meaningless results for temperatures and dew points outside of the range depicted on the Heat Index Chart linked below.
The heat index is a temperature that combines air temperature and relative humidity, in shaded areas. The value of relative humidity for which, the heat index number equals the actual air temperature when the temperature is 32 °C and humidity is 70%.
