More than 160 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

Heat exhaustion and heatstroke can be brought on by extremely high temperatures. How to keep others and yourself safe.

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

CalHeatScore, in the works for years, is designed to help officials and residents better anticipate the risks of heat-related illnesses on the hottest days. Maps and other data round out the service.

The NAWH – also known as “the cold blob” – appears on a global heat map as an anomalous blue patch in a sea of orange and yellow. While average ocean temperatures are rising as a consequence of ...

Gov. Gavin Newsom on Thursday announced the launch of a new, first-in-the-nation tool to forecast and rank heat severity in areas across California.

Maps show what a heat dome means for high temps, humidity, hurricane season. A heat dome is bringing extreme temperatures and humidity to southern states and warming the Gulf of Mexico.