Extreme heat warnings and heat advisories were issued across parts of the U.S. Southwest and Pacific Northwest on Friday.

Heat advisories have been issued for large areas of California, as forecasters expect temperatures to climb above 100 across ...

Las Vegas and two cities in southern Texas are facing record temperatures as a result of the West's heat wave.

Several cities were scorched by daily heat records on Thursday amid "extreme" heat in the southwestern United States.

NOAA's Center for Heat Resilient Communities would have helped cities better understand their struggles with heat — and ...

Federally funded research by JHU epidemiologist Jaime Madrigano aims to identify neighborhood characteristics and behavior ...

From spring to fall, as temperatures rise earlier and remain high into the year, the dangers of extreme heat are becoming ...

Scientists say 4 billion people experienced at least one extra month of extreme heat because of human-caused climate change ...