Highlights
- An Extreme Heat Warning is in effect for Scottsdale and Paradise Valley from 10 a.m. Sunday to 8 p.m. Monday.
- Afternoon temperatures of 105 to 109 degrees are forecast, with major heat risk for the entire Phoenix metro.
- Maricopa County residents can call 2-1-1 to locate free cooling centers, transportation, and water.
- Heat stroke is a medical emergency; call 911 for anyone who becomes unresponsive or stops sweating.
EXTREME HEAT WARNING: The National Weather Service in Phoenix issued an Extreme Heat Warning Saturday afternoon covering Scottsdale and Paradise Valley, along with the broader Phoenix metro, running from 10 a.m. Sunday through 8 p.m. MST Monday.
Afternoon temperatures of 105 to 109 degrees are expected across the warned area, which includes the Northwest Valley, Buckeye and Avondale, Deer Valley, Central Phoenix, North Phoenix and Glendale, the East Valley, South Mountain and Ahwatukee, and Southeast Valley and Queen Creek. The NWS classifies the event as a Major Heat Risk.
Heat-related illnesses rise sharply during conditions like these. Overexposure can progress from heat cramps and heat exhaustion to heat stroke without intervention. Anyone overcome by heat should be moved immediately to a cool, shaded location; heat stroke requires a call to 911.
The NWS advises rescheduling strenuous outdoor activity to early morning or evening when possible, 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.
Maricopa County residents can call 2-1-1 to find a free cooling center, transportation, and water. Additional resources are listed at maricopa.gov/heat.
The warning expires at 8 p.m. MST Monday, May 11.
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 09/05/2026 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.
