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

A heat dome happens when hot air is trapped over an area due to a persistent high pressure system, William Gallus, a ...

Land surface temperature (LST) is a critical parameter for understanding Earth's energy balance and monitoring climate change ...

Rather than constantly yo-yoing with your thermostat, a consistent temperature is the best approach. The U.S. Department of ...

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

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

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

Late Friday afternoon, the mercury at Philadelphia International Airport hit a scorching 98 degrees — beating the all-time record for the hottest temperature there on a July 25. The previous record of ...

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.