Temperatures could reach 112 degrees in Las Vegas, Phoenix and Palm Springs.
A dangerous and record-breaking heat wave is heading west this week, affecting California, Arizona and southern Nevada, including Las Vegas.
An extreme heat warning begins Tuesday for the California Valley region, with temperatures as high as 108 degrees possible from Redding to Sacramento to Fresno to Bakersfield.
On Wednesday, a heat warning will extend from Las Vegas to Lake Havasu, Arizona.
By Thursday or Friday, temperatures are forecast to reach 112 degrees in Las Vegas, Phoenix and Palm Springs, California.
Las Vegas will top 110 degrees on Thursday, making it the city’s hottest month in June.
If Phoenix tops 111 degrees on Thursday, the city will break the daily record set in 2016.
Reno, Nevada and Fresno, California will be near daily records on Thursday.
This weather is considered a major heat hazard; Overexposure can cause heat cramps and heat exhaustion, and without intervention, it can lead to heat stroke.
Further north, temperatures could hit the mid-90s in Salt Lake City and Boise, Idaho.
Click here to learn about staying safe in the heat.