Highlights
- ADEQ has issued an Ozone High Pollution Advisory for the Phoenix metro area, including Maricopa County, through Sunday, Aug. 23.
- Forecast weather combined with existing ozone levels are expected to produce 8-hour ozone concentrations that pose a health risk.
- Children, older adults, and people with respiratory conditions face the greatest risk; reduced physical activity is recommended.
- Residents are urged to carpool, telecommute, or use mass transit, and to avoid gasoline-powered equipment during peak hours.
The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory for the Phoenix metro area through 9 p.m. Sunday, Aug. 23, the National Weather Service Phoenix office announced at 9:18 a.m. Thursday.
Forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk, according to the NWS alert. Adverse health effects increase as air quality deteriorates.
Ozone is an air contaminant that can cause breathing difficulties for children, older adults, and persons with respiratory problems. A decrease in physical activity is recommended for those groups.
Residents are urged to carpool, telecommute, or use mass transit. The use of gasoline-powered equipment should be reduced or deferred to late in the day.
Full advisory details are available at azdeq.gov/forecast/phoenix or by calling ADEQ at 602-771-2300. The advisory expires at 9 p.m. Sunday.
Sources
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- api.weather.gov retrieved 21/08/2026 16:21
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 21/08/2026 16:21. Every claim traces to a source.
