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Heat index

temperature  °C  °F
rel. humidity  %
dew point  °C  °F
heat index  °C  °F
humidex  °C  °F



Rounding: significant digits.
Decimal sign:

When the weather is humid, the heat index indicates the human-perceived equivalent temperature on the basis of air temperature and relative humidity (and other parameters) [Wikipedia]. The Humidex is a similar index by Environment Canada based on air temperature and dewpoint temperature. It is a dimensionless number. However, it indicates for humid air with which temperature dry air would feel similarly. Therefore, the values are given in degrees Celsius and degrees Fahrenheit.

Usage: Trockenheit Type the temperature and the relative humidity or the dew point temperature into the corresponding fields. After a mouse click on any free space of the window or the "calculate"-button the calculation is performed. Click on the "reset"-button to reset the calculation. Move the mouse over a unit or click on it to read its full name.

For a calculation the air temperature must be higher than 26.6°C (80°F). The valid range for relative humidity is 40 % to 100 %. The dew point temperature must not be higher than the air temperature.

Example: A temperature of 33°C and a relative humidity of 70 % have been measured. Type the values into the corresponding fields. After the next mouse click on any free space of the window or the "calculate"-button you can read the result: The heat index is 43°C and the humidex 47.4°C.

Remarks:
- Please note the remarks about the representation of numbers..
- There is no warranty for the calculation. Cactus2000 is not responsible for damage of any kind caused by wrong results.
- Please send an email if you have suggestions or if you would like to see more conversions to be included.

- A collection of all Cactus2000-converters running offline may be ordered for a price of € 15.-. A test version is available for download for free.

© Bernd Krüger, 20.07.2014

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