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Birmingham, AL
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For more information about the indices and equations used;

Temperature Conversion
Enter a number then click on the appropriate number to see the result.
Fahrenheit (oF)
Celsius (oC)


Wind Chill Calculation
Wind Chill/Temperature Index Calculation in degrees Fahrenheit

Enter in the air temperature ( Tair ) in degrees Fahrenheit and wind speed in mile per hour ( mph ), then click on the Calculate WC to compute the windchill ( WC ).
Tairo F mph
For more information about windchill (ie. equation) click here.
Wind Chill/Temperature Index Calculation in degrees Celsius

Enter in the air temperature ( Tair ) in degrees Celsius and wind speed in miles per hour, then click on the Calculate WC to compute the windchill ( WC ).
Tair o C mph
For more information about windchill (ie. equation) click here.


Relative Humidity Calculation
Relative Humidity Calculation using degrees Fahrenheit

Enter in the air temperature ( Tair ) and dew point temperature ( Tdp) in degrees Fahrenheit ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ).
Tair ( o F ) Tdp ( o F ) RH
Tair
Tdp
For the relative humidity equation, go here
Relative Humidity Calculation using degrees Celsius

Enter in the air temperature ( Tair ) and dew point temperature ( Tdp) in degrees Celsius ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ).
Tair ( o C ) Tdp ( o C ) RH
Tair
Tdp
For the relative humidity equation, go here


Heat Index Calculation

Valid entries are, air temperatures greater than 80 °F ( 27 °C ), dew point temperatures greater than 65 °F ( 12 °C ), and relative humidities higher than 40 percent.

in Fahrenheit (from dew point)

Enter in the air temperature ( Tair ) the dew point temperature ( Tdp ) in degrees Fahrenheit, then click on the Calculate HI to compute the heat index ( HI ).

Tair in °F Tdp in °F RH =
in Celsius (from dew point)

Enter in the air temperature ( Tair ) and the dew point temperature ( Tdp ) in degrees Celsius, then click on the Calculate HI to compute the heat index ( HI ).
Tair in °C Tdp in °C RH =
in Fahrenheit (from realitive humidity)

Enter in the air temperature ( Tair ) in degrees Fahrenheit and relative humidity ( RH ) in percent ( without the % sign ), then click on the Calculate HI to compute the heat index ( HI ).
Tair in °F RH Tdp =
in Celsius (from realitive humidity)

Enter in the air temperature ( Tair ) in degrees Celsius and relative humidity ( RH ) in percent ( without the % sign ), then click on the Calculate HI to compute the heat index ( HI ).

Tair in °C RH Tdp =


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Page Author: NWS-Birmingham Internet Services Team
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Date modified:August 12, 2007
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