Weather School: Heat Index

Weather School: Heat Index

AUGUSTA, GA (WFXG) - The blistering hot days of summer are here. And while temperatures often grab the headlines, the high humidity combined with those temperatures is even more dangerous.

Heat index is the temperature it feels like to our bodies. We all know that when we get too hot, we sweat. If that sweat can't evaporate, our bodies have a tough time cooling off. When humidity is high, our bodies actually sweat less which raises our body temperature.

Heat index is calculated with a complicated math equation, or you can use a handy table from the National Weather Service.

As temperature and humidity go up, the heat index goes up along with the impact on our bodies.

It's important to remember that heat index is calculated for shaded areas. You can add as much as 15 degrees to it in the direct sun.

Heat-related illness becomes more likely as the heat index rises above 90 degrees.

Above 103 degrees, it's downright dangerous. That's why it's important to know the warning signs of heat-related illnesses, drink plenty of water, and find a way to cool yourself if symptoms start.

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