The Latest Breaking News from Phoenix

More than a third of Americans were under extreme heat advisories, watches and warnings Thursday as a blistering heat wave that's been baking the nation spread further into California, forcing residents to seek out air conditioning or find other ways to stay cool in triple-digit temperatures.

More than 111 million people across the U.S. remain under weather advisories or warnings as forecasters say an oppressive heat wave might get worse before it gets any better.

AccuWeather warns of scorching temperatures and increased risk of wildfires in the Southwest as all-time highs may be challenged.

Millions of people around the Southwest are living through a historic heat wave

Extreme heat is the number one weather-related killer in an average year in the U.S.

Only Miami, Phoenix and Los Angeles have named heat czars.

Phoenix says it’s slowly clearing hundreds of people from a downtown camp of homeless people called “The Zone,” asking a judge to allow more time to clear the area and set up a safer, structured camp site for people living outside

Relentless temperatures upwards of 100F leave millions under extreme heat warnings and outdoor events cancelled

Phil Scott says damage is ‘historic and catastrophic’; parts of the US south and southwest are suffering extreme heat

Even desert residents accustomed to scorching summers are feeling the grip of an extreme heat wave smacking the Southwest this week

The Southwestern U.S. is bracing for another week of blistering temperatures