The National Weather Service issued an Extreme Heat Warning for the Phoenix metropolitan area beginning August 18 at 12:28 a.m. MST and lasting until 8 p.m. MST Friday. 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 108 to 112 degrees.
The National Weather Service warns that heat-related illnesses increase significantly during extreme heat events, with potential progression from heat cramps and heat exhaustion to heat stroke without intervention. 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.
Source: National Weather Service
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- National Weather Service retrieved 18/08/2026 07:30
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 18/08/2026 07:30. Every claim traces to a source.
