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What is the Heat Index?

You may have heard its not the heat, its the humidity. Find out more information regarding the heat index in today’s weather education.

The heat index, according to the National Weather Service, is a measure of how hot it really feels when the relative humidity is factored in with the air temperature.

The NWS provides a chart to help determine the current heat index. Remember the heat index values are determined in shady areas, so direct sunshine can add up to 15°F to the heat index. Red areas indicate extremely dangerous conditions.

With the high heat and humidity in the southeast, be sure to limit outdoor activity and drink plenty of water when the heat index is above 100°.

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