Highlights
- The Fountain Hills air monitoring station recorded ozone at 78.0 PPB at midnight on Aug. 28, 2026.
- That reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
- Maricopa County Air Quality Department is the reporting agency for the station, AQS site ID 040139704.
- Residents can track current conditions and active alerts on the AirNow Phoenix-area page.
The Maricopa County Air Quality Department's Fountain Hills monitoring station recorded ozone at 78.0 parts per billion at midnight Friday, Aug. 28, crossing AirNow's Unhealthy for Sensitive Groups threshold for ozone.
The reading came from AQS site ID 040139704, one of the county's fixed air quality monitors. Maricopa County Air Quality Department is the reporting agency for the station.
Residents seeking current conditions, forecasts, or any active advisories for the Phoenix area can check the AirNow Phoenix page directly. For county-specific guidance, Maricopa County Air Quality can be reached at 602-506-6010.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 28/08/2026 01:22
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 28/08/2026 01:22. Every claim traces to a source.
