The National Weather Service issued an Extreme Heat Warning for the Phoenix metropolitan area effective Sunday at 10 a.m. through Monday 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 109 degrees.

The NWS warns that heat-related illnesses increase significantly during extreme heat events, with potential risks ranging from heat cramps and heat exhaustion to heat stroke without intervention. Residents are advised to take extra precautions if working or spending time outdoors. Maricopa County residents can call 2-1-1 to locate free cooling centers, transportation, water, and additional resources.

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.

  1. National Weather Service retrieved 09/05/2026 20:40

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 09/05/2026 20:40. Every claim traces to a source.