The National Weather Service issued an Extreme Heat Warning for the greater Phoenix area effective May 11 at 12:35 p.m. MST through May 12 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 110 degrees.
The National Weather Service warns that heat-related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion, which without intervention can lead to heat stroke. Residents should take extra precautions if working or spending time outdoors, reschedule strenuous activities to early morning or evening, wear lightweight clothing, 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.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- National Weather Service retrieved 11/05/2026 19:36
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 11/05/2026 19:36. Every claim traces to a source.
