Highlights

The National Weather Service in Phoenix issued an Extreme Heat Warning covering Scottsdale, Paradise Valley, and the broader Phoenix metropolitan area through 8 p.m. Sunday, Aug. 9, with afternoon temperatures forecast between 106 and 114 degrees.

The NWS describes conditions as dangerously hot and humid, carrying a Major Heat Risk designation. The warning, issued Aug. 4 at 11:33 p.m. MST, spans nine zones: Northwest Valley, Buckeye/Avondale, Deer Valley, Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise Valley, East Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.

Heat-related illness risk rises sharply under these conditions, according to the NWS. Overexposure can progress from heat cramps and heat exhaustion to heat stroke without intervention. The agency advises rescheduling strenuous outdoor activity to early morning or evening, wearing lightweight and loose-fitting clothing, and drinking plenty of water.

For outdoor workers, the Occupational Safety and Health Administration recommends frequent rest breaks in shaded or air-conditioned environments, per the NWS advisory. Anyone overcome by heat should be moved immediately to a cool, shaded location. Heat stroke requires a call to 911.

In Maricopa County, free cooling centers, transportation assistance, and water are available by calling 2-1-1 or visiting maricopa.gov/heat.

The warning remains in effect until 8 p.m. MST Sunday, Aug. 9.

Sources

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  1. api.weather.gov retrieved 05/08/2026 06:33

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 05/08/2026 06:33. Every claim traces to a source.