NBC News’ Emilie Ikeda reports tonight on the extreme summer weather across the country impacting tens of millions from ...

A Weather Authority First Alert ACTION DAY is NOW in effect through Friday for the Desert Southwest, as we will need to take action for the dangerously hot conditions. An Excessive Heat Warning is NOW ...

We are heating up here in the Coachella Valley! We are now under both a First Alert Weather Alert and an Extreme Heat Warning ...

The Phoenix Fire Department on Tuesday rescued an overheated hiker from a Camelback Mountain trail that was closed due to the ...

An Extreme Heat Warning remains in effect through Friday at 8:00 p.m., as an unusually strong high-pressure ridge continues to dominate the region.

WHERE...Eastern Cochise County below 5000 feet, South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, ...

First Alert Weather Days remain in effect through Thursday as wildfire smoke continues drifting into Southern Nevada.

According to Sandra Shaw, heat indices are expected to reach 108-112 degrees. "Actual temperature highs will hit the low-to-mid 90s under partly cloudy skies," she added.

Las Vegas battles smoke from wildfires and extreme heat with Red Flag Warnings and poor air quality anticipated.

The National Weather Service has issued extreme heat warnings and heat advisories for parts of California, what areas are ...