The chart is a grid where you can find the heat index temperature by looking at the air temperature and relative humidity. For example, the NWS says if it's 96 outside and the humidity is 65% ...

How is the heat index measured? “It takes temperature and some measure of moisture content in the atmosphere into account,” says Novella. Relative humidity ... who can’t find shelter.

The heat index heavily relies on how much moisture there is in the air. For example, an air temperature at 85℉ with a dew point of 70℉, or 63% relative humidity will actually feel like 90 ...

The southern stretch of Alabama is heating up fast. By Saturday, June 7, the city will move into the danger zone on the heat ...

The chart is a grid where you can find the heat index temperature by looking at the air temperature and relative humidity. For example, the NWS says if it's 96 outside and the humidity is 65% ...