Severe and extreme heat-related impacts are expected across a wide swath of the U.S. this weekend and next week.

The best temperature to set your air conditioner at can depend on several factors, including comfort preferences, energy ...

Sauna-like conditions on Friday are threatening to break records in major Northeast cities during summer’s hottest month ...

According to the report, you should set your thermostat to 78 degrees Fahrenheit when you’re home, 85 degrees when you’re at ...

How is the heat index calculated, and why is it more important than the air temperature during some heat waves?

At least 130 million people from Texas to Maine are under alert for dangerous heat and humidity over the next few days.

A Heat Advisory is in effect from noon to 9 pm Thursday. Expect heat index values up to 107 with temperatures of 99 to 103.