Phoenix in July became the first major city in the country to reach an average monthly temperature higher than 100°F.
By the numbers: Phoenix's average July temperature of 102.7°F marked its hottest month on record, shattering the previous record of 99.1°F in August 2020.
A massive wildfire in California's Mojave National Preserve that exploded in size and spilled into Nevada over the weekend is threatening wildlife and Joshua tree forests.
The big picture: The wind-driven York Fire is California's largest wildfire this year. It's burning uncontained across some 77,000 acres and was one of64 large fires burning across nine states as of Monday.