HEALTHJul 2 · 14:44 UTCWSMV4 NASHVILLEStefano DiPietro

First Alert Weather: What is the heat index?

The heat index measures how hot the air feels by combining temperature and humidity. High humidity prevents sweat evaporation, making the body feel hotter than the actual temperature. The article also promotes the WSMV 4 First Alert Weather app for weather alerts.

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heat indextopicWSMV 4 First Alert Weather apporganizationNashville, Tenn.placehumiditytopictemperaturetopic

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