Highlights

EXTREME HEAT WATCH: The National Weather Service in Phoenix issued an Extreme Heat Watch for Scottsdale and Paradise Valley, along with most of the Phoenix metro, running from Sunday morning through Monday evening, May 11, at 8 p.m. MST. Afternoon temperatures of 104 to 110 degrees are possible across the watch area, which includes the Northwest Valley, East Valley, Buckeye/Avondale, Deer Valley, Central Phoenix, North Phoenix/Glendale, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. The NWS classifies the risk level as Major Heat Risk. Heat-related illnesses rise sharply during events of this intensity. Overexposure can progress from heat cramps and heat exhaustion to heat stroke without intervention. Heat stroke is a medical emergency; call 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, water, and additional resources. More information is available at maricopa.gov/heat. The watch remains in effect through Monday, May 11, at 8 p.m. MST; NWS Phoenix may upgrade to an Excessive Heat Warning as the weekend progresses.

Sources

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  1. api.weather.gov retrieved 2026-05-08T06:35:56.382774+00:00

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 2026-05-08T06:35:56.382774+00:00. Every claim traces to a source.