In the Southwest, cities including Las Vegas and Phoenix are under extreme heat warnings, with temperatures expected to climb ...

The numbers of many tropical birds are plummeting, and now it has been shown that heat extremes intensified by global warming ...

Temperatures are expected to reach between 106 and 111 degrees this week. The hottest day will be Tuesday with an expected ...

At 1:40 a.m. on Monday, the NWS Las Vegas NV released an updated extreme heat warning valid from 10 a.m. until Tuesday 8 p.m.

The hot pattern will peak today as the mercury in the thermometer will reach the triple digits in a number of locations.  The heat will remain Tuesday, so the Local Alert Day is in place again Tuesday ...

An Extreme Heat Warning remains in effect for central and southwestern Arizona through 8 p.m. Tuesday. For the Grand Canyon ...

July might have been Las Vegas’ coolest in a decade, but August isn’t likely to repeat that feat. The National Weather Service has issued an extreme heat warning for the Las Vegas Valley. It will be ...

An extreme heat warning for Portland is issued by NWS, expecting temperatures up to 105 degrees. The public is advised to ...

On Sunday at 1:11 p.m. an extreme heat warning was issued by the National Weather Service in effect until Tuesday at 10 p.m.

House Democrats are confronting the BOP on inmate safety amid extreme heat, citing reports of related deaths and pressing for ...

The National Weather Service issued an extreme heat watch at 11:35 p.m. on Sunday valid for Tuesday between 11 a.m. and 8 p.m ...

Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.