06/23/2026
The National Weather Service has issued an extreme heat warning expected across parts of Arizona, with afternoon highs ranging from 107 to 115 degrees.
Warnings and watches include:
• Extreme Heat Warning from 11 a.m. Tuesday, June 23, until 8 p.m. Wednesday, June 24, for southeast Pinal County, the Tucson metro area, the Upper Gila River Valley, and the Upper San Pedro River Valley, mainly north of Benson.
• Extreme Heat Warning until 7 p.m. Tuesday, June 23, for lower elevations of the Grand Canyon.
• Extreme Heat Watch from 10 a.m. Wednesday, June 24, until 8 p.m. Thursday, June 25, for much of the Phoenix metro area, including Buckeye/Avondale, central Phoenix, Deer Valley, the East Valley, north Phoenix/Glendale, the Northwest Valley, Scottsdale/Paradise Valley, South Mountain/Ahwatukee, and the Southeast Valley/Queen Creek.
• Extreme Heat Watch from 10 a.m. Wednesday, June 24, until 8 p.m. Thursday, June 25, for central La Paz, Parker Valley, and Yuma.
Employers: now is the time to protect workers. Review heat safety plans, encourage water, rest, and shade, and make sure employees know the signs of heat illness.
Bookmark our Workplace Heat Safety Resource Center: https://acnsc.org/workplace-heat-safety/