Arizona Watcher
Phoenix reached 115°F at Sky Harbor International Airport at 3:02 p.m. MST on Sunday, setting a new Aug. 2 record and surpassing last year’s 114°F.
The National Weather Service maintained an extreme heat warning for Phoenix and surrounding areas, in effect through Tuesday night, signaling continued hazardous temperatures.
Phoenix Sky Harbor is the official observation site for the metropolitan area's temperature records; its 3:02 p.m. reading is recorded as the city's official daily high.
Sky Harbor also recorded a record warm low of 94°F Sunday morning, underscoring the dangerous lack of overnight cooling during the heat wave.
Maricopa County launched the 2026 Heat Relief Network with cooling centers, hydration stations and respite sites; the City of Phoenix expanded cooling-center hours and updated its heat-response plan.
Arizona Public Service reported a new all-time peak energy demand of 9,053 megawatts on July 24, 2026, reflecting elevated stress on the power system amid prolonged high temperatures.
Phoenix reached a new high for Aug. 2 when the thermometer at Sky Harbor International Airport climbed to 115°F Sunday afternoon. The National Weather Service maintained an extreme heat warning for the area that is expected to remain in effect through Tuesday night.