Highlights
- The National Weather Service has issued an Extreme Heat Warning for Scottsdale and Paradise Valley effective through 8 p.m. Friday, Aug. 21.
- Afternoon highs will reach 109 to 113 degrees, with overnight lows between 88 and 92 — conditions the NWS classifies as Major Heat Risk.
- Maricopa County residents can call 2-1-1 to locate free cooling centers, transportation, and water.
- OSHA recommends frequent rest breaks in shaded or air-conditioned environments for anyone working outdoors.
The National Weather Service issued an Extreme Heat Warning for Scottsdale, Paradise Valley, and the broader Phoenix metropolitan area beginning 10 a.m. Monday, Aug. 15, and running through 8 p.m. Friday, Aug. 21.
Afternoon temperatures are forecast at 109 to 113 degrees, with overnight lows of 88 to 92. The NWS categorizes the event as a Major Heat Risk. 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.
The NWS warns that overexposure can cause heat cramps and heat exhaustion and, without intervention, can progress to heat stroke. Anyone overcome by heat should be moved to a cool, shaded location immediately; heat stroke requires a call to 9-1-1.
For outdoor workers, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments and rescheduling strenuous activity to early morning or evening hours.
Where can I find a free cooling center in Maricopa County?
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 warning remains in effect through 8 p.m. Friday.
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 15/08/2026 17:10
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 15/08/2026 17:10. Every claim traces to a source.
