Highlights
- NWS Phoenix issued an Extreme Heat Warning covering Scottsdale and Paradise Valley effective August 22 through 8 p.m. Saturday, August 29.
- Afternoon temperatures are forecast between 108 and 116 degrees, with Major to Extreme Heat Risk levels.
- 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 overcome by heat.
The National Weather Service in Phoenix issued an Extreme Heat Warning covering Scottsdale, Paradise Valley, and the broader Phoenix metropolitan area beginning August 22 and running through 8 p.m. MST Saturday, August 29, according to a 11:42 a.m. alert posted Saturday.
Afternoon temperatures between 108 and 116 degrees are expected across the affected zones, which include Northwest Valley, Buckeye/Avondale, Deer Valley, Central Phoenix, North Phoenix/Glendale, East Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. NWS classifies conditions as Major to Extreme Heat Risk.
The agency warns that heat-related illnesses increase significantly during events of this severity. 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.
NWS advises rescheduling strenuous outdoor activity to early morning or evening, wearing lightweight and loose-fitting clothing, and drinking plenty of water. Workers spending time outside should take frequent rest breaks in shaded or air-conditioned environments, per guidance from the Occupational Safety and Health Administration cited in the alert.
Maricopa County residents can call 2-1-1 to find a free cooling center, transportation, water, and additional resources. Full county heat resources are listed at maricopa.gov/heat.
The warning remains in effect until 8 p.m. MST Saturday, August 29.
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 22/08/2026 18:44
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 22/08/2026 18:44. Every claim traces to a source.
