Highlights
- NWS Phoenix issued an Extreme Heat Warning effective through 8 p.m. MST Sunday, Aug. 9.
- Afternoon temperatures across the Phoenix metro, including Scottsdale and Paradise Valley, are forecast at 109 to 112 degrees.
- Maricopa County residents can call 2-1-1 to locate free cooling centers, transportation, and water.
- Heat stroke is a medical emergency — call 911 if someone is overcome by heat.
EXTREME HEAT WARNING: The National Weather Service in Phoenix has issued an Extreme Heat Warning for Scottsdale, Paradise Valley, and the broader Phoenix metropolitan area through 8 p.m. MST tonight, Aug. 9, citing dangerously hot conditions with afternoon temperatures forecast at 109 to 112 degrees and a Major Heat Risk designation.
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. NWS Phoenix says heat-related illnesses increase significantly during extreme heat events, with overexposure capable of causing heat cramps and heat exhaustion that can progress to heat stroke without intervention.
NWS advises rescheduling strenuous outdoor activity to early morning or evening, wearing lightweight and loose-fitting clothing, and drinking plenty of water. The Occupational Safety and Health Administration recommends frequent rest breaks in shaded or air-conditioned environments for outdoor workers.
In Maricopa County, free cooling centers, transportation, and water are available by calling 2-1-1 or visiting maricopa.gov/heat. Heat stroke is a medical emergency, call 911 immediately if someone is overcome.
The warning expires at 8 p.m. MST tonight; check NWS Phoenix for any extensions or updated advisories.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- api.weather.gov retrieved 09/08/2026 18:15
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 09/08/2026 18:15. Every claim traces to a source.
