A public health researcher explains the signs someone is developing heat exhaustion or heat stroke, and what to do.

A phenomenon called "corn sweat" could exacerbate the impacts of the extreme heat blanketing a large portion of the U.S., ...

Pennsylvania is expected to have 37 days of 90-degree temperatures in a year by mid-century, up from an average of 5.

News Storm Team Meteorologist Chris Bouzakis has a look at how many days this summer have been above 90 degrees.

June 20 marks the first official day of summer, with millions of Americans already under heat warnings. See cities hotter ...

A heat wave will bring an increased risk of heat illness to North Carolina into the last week of July and first week of ...

It’s the kind of heat that takes you back 45 years to memories of Memphis in the summer of 1980. That July, the city hit 100 ...

Iran held a public holiday for some areas over a scorching heatwave. An official holiday for public sector employees in eight ...

The heat wave isn't over yet...and with high temperatures comes risks, from heat exhaustion to dehydration.That’s why summer ...

Others are taking a more leisurely approach to the heat. Alexander Marris chose to spend the day at the Miller Park Pool. "It ...