When you download the free AccuWeather app, you gain the tools to optimize your health, safety and comfort including the AccuWeather RealFeel® and monitoring the UV index in the event of a heat wave.

This heat index level means the NWS has issued heat advisories and warnings affecting more than 140 million people in the U.S. this month.

With some significant heat expected to hit the south-central U.S. for the next couple of days, here's how you can plan ahead using the AccuWeather RealFeel® when you download the free app.

When you download the free AccuWeather app, you gain the tools to optimize your health, safety and comfort including the AccuWeather RealFeel® and monitoring the UV index in the event of a heat wave.

This heat index level means the NWS has issued heat advisories and warnings affecting more than 140 million people in the U.S. this month.