The first major U.S. heat wave of the year starts on Friday. It brings dangerously high temperatures and is expected to last ...

The National Weather Service called the warm and above-average temperatures coming in behind the system "the first ...

STATEN ISLAND, N.Y. — After weeks of predominantly chilly and wet weather, New York City will finally see some summer heat.

Heat is the number one killer -- and it’s heading to the most densely populated part of America for a prolonged period.

A heat wave is in the forecast for eastern Nebraska this weekend, with the heat index predicted to reach triple digits.

It's important that Hoosiers know the signs of serious illness during a heat risk and how to stay safe and cool before next ...

Heat indices could spike into the triple digits on June 22 and June 23 as both the temperature and humidity reach their ...

The first significant heat wave of the summer is taking aim at a huge chunk of the United States later this week, and ...

A wild stretch of weather is expected to engulf the NYC area in the coming days, bringing a mixed bag of heavy rain, ...

NWS issues severe weather forecast for Washington D.C., with thunderstorms and high heat index warnings for the coming days.

Heat indexes -- a measure of how hot it feels factoring in humidity -- could near 110 degrees Monday through Wednesday.