Heat-related alerts had been issued for 18 states as of Monday, with the National Weather Service (NWS) urging residents to take steps to reduce the risk of heat illnesses.

How low should you set your thermostat for as record-breaking heat sweeps over the country? Here's what experts and other ...

Canadian wildfire smoke has returned to parts of Wisconsin and may last through Monday morning. Then comes more extreme heat and humidity.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 ...

As we approach a very warm week with the heat index increasing to dangerously high levels, City officials remind citizens to ...

San Antonio is set to experience intense heat, with temperatures nearing 100 degrees and high heat index values.

Millions of Americans could face intense heat, severe storms, and flooding this week, according to forecasters.

Heat index values could rise to 110-112 degrees, according to the National Weather Service. Higher rain chances later in the ...

The National Weather Service has issued heat advisories across Southeast Georgia, as well as Northeast and Central Florida.

The National Weather Service is forecasting another heat wave for the Stark County area this week. Here's how high you can ...

A heat advisory will be in effect from 11 a.m. Monday until 9 p.m. Tuesday for the following counties in central Alabama: ...