Highlights
- The Fountain Hills air monitor recorded ozone at 80.0 PPB at 11 p.m. Wednesday, Aug. 20.
- That reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
- Maricopa County Air Quality Department is the reporting agency; residents can track current conditions at AirNow's Phoenix-area page.
The air quality monitor in Fountain Hills recorded ozone at 80.0 parts per billion at 11 p.m. Wednesday, Aug. 20, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department. That reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
The reading came from AQS site ID 040139704, the Fountain Hills monitoring station. Residents can check current readings and any active advisories on AirNow's Phoenix-area page. For health guidance specific to Maricopa County, the Air Quality Department can be reached at 602-506-6010, per the Town of Fountain Hills.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 21/08/2026 00:55
- fountainhillsaz.gov retrieved 21/08/2026 00:55
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 00:55. Every claim traces to a source.
