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What is heat index? How hot does it really feel outside? Use this chart to find out
The chart is a grid where you can find ... temperature and either the relative humidity or the dew point to calculate the heat index temperature.
Weather IQ: Humidity or Dew point, which should we use?
Dew point measures the air’s moisture content directly and impacts weather perception more accurately than relative humidity.
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Dew point
The dew point is the temperature the air needs to be cooled to in order to achieve a relative humidity (RH) of 100%. The higher the dew point rises, the greater the amount of moisture in the air.
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What is the heat index? How hot does it really feel in Ohio? Use this chart to find out
The chart is a grid where you can find ... temperature and either the relative humidity or the dew point to calculate the heat index temperature.