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Wind Chill Index

wind chill chart

Wind Chill Calculator


Index Index


The Heat Index

heat index chart

Your National Weather Service will issue special advisories/warnings during times of High Heat Indicies:

    For an outlook beyond 3-4 days, see the extended heat index guidance we get from the NWS's Hydrometeorological Prediction Center (HPC):
  • Maximum HEAT INDEX OUTLOOKS (for days 3-7) from the NWS Hydrometeorological Prediction Center (HPC) in DC.

Heat Index Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit
and relative humidity (RH) in percent (no % sign),
then click on "Get HI" to compute the heat index (HI).
Tair RH HI= Tdp=
Or Enter an Air Temp and Dew Point to get the Heat Index (HI).
Tair Tdp HI= RH=


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US Dept of Commerce
NOAA National Weather Service
Central Pennsylvania Weather Forecast Office
328 Innovation Blvd, Suite 330
State College, Pennsylvania 16803
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Page Last Modified: 07 January 2014 00:57:02 UTC
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