A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

Extreme levels of heat and humidity are forecast to spread across the country over the next two weeks, blanketing the ...

The Centers for Disease Control and Prevention said some medications interfere with the body's ability to regulate ...

A heat wave is currently affecting about 160 million people, according to the National Weather Service. Here's which states ...

Heat waves like this one can put people at risk of heat exhaustion or the even more serious condition of heat stroke.

The National Weather Service has issued a heat advisory and air quality alert for the third day during the first heat wave of ...

Weather agencies have issued alerts warning of a third day of high temperatures that in some places have climbed well above ...

Proactive management of livestock prior to and during heat events is critical in protecting livestock from heat stress.

For example, when the air temperature is 100 degrees Fahrenheit, and the relative humidity is 55 percent, the heat index can shoot up to a sweltering 124 degrees Fahrenheit. And that’s in the shade.

The heat wave has arrived. Temperatures and humidity are climbing as the tri-state heads into an expected record-shattering ...

The Milwaukee-Sullivan National Weather Service has issued an extreme heat warning from noon on Friday, June 21 to 7 p.m. on Monday, June 23.