The National Weather Service issued an Extreme Heat Warning for the Phoenix metropolitan area effective August 20 at 2:30 a.m. MST through August 23 at 8 p.m. MST. The warning covers Northwest Valley, Buckeye/Avondale, Deer Valley, Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise Valley, East Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. Afternoon temperatures are expected to reach 105 to 112 degrees.
The NWS warns that heat-related illnesses increase significantly during extreme heat events, with overexposure potentially causing heat cramps, heat exhaustion, and heat stroke. Residents should take extra precautions if working or spending time outdoors, reschedule strenuous activities to early morning or evening when possible, and drink plenty of water. Maricopa County residents can call 2-1-1 to find free cooling centers, transportation, and water resources.
Source: National Weather Service.
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- National Weather Service retrieved 20/08/2026 09:35
Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 20/08/2026 09:35. Every claim traces to a source.
