Highlights
- An Extreme Heat Warning is in effect for Scottsdale, Paradise Valley, and surrounding areas through 8 p.m. Sunday, Aug. 23.
- Afternoon highs of 108 to 111 degrees are forecast, with NWS classifying the event as Major Heat Risk.
- OSHA recommends frequent rest breaks in shaded or air-conditioned environments for anyone working outdoors.
- Public cooling shelters are available in some areas; residents should contact county officials for locations.
The National Weather Service issued an Extreme Heat Warning Wednesday morning covering Scottsdale, Paradise Valley, Central Phoenix, Deer Valley, the East Valley, North Phoenix/Glendale, and the Northwest Valley, with dangerously hot conditions expected through 8 p.m. Sunday, Aug. 23.
Afternoon temperatures are forecast between 108 and 111 degrees. The NWS classifies the event as a Major Heat Risk, warning that overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.
The NWS advises rescheduling strenuous outdoor activities 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 scheduling frequent rest breaks in shaded or air-conditioned environments for anyone working outside. Anyone overcome by heat should be moved to a cool and shaded location; heat stroke is a medical emergency requiring a call to 911.
Public cooling shelters are available in some areas. Maricopa County officials can provide specific locations.
The warning remains in effect until 8 p.m. MST Sunday.
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 19/08/2026 17:50
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 19/08/2026 17:50. Every claim traces to a source.
