Highlights
- The Fountain Hills air quality station recorded ozone at 71.0 PPB at 8 p.m. 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 AirNow's Phoenix-area page.
The Maricopa County Air Quality Department's Fountain Hills monitoring station recorded ozone at 71.0 parts per billion at 8 p.m. Friday, Aug. 28, crossing AirNow's Unhealthy for Sensitive Groups threshold for ozone, according to the EPA AirNow public hourly aggregate.
The reading came from AQS site ID 040139704 in Fountain Hills. 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 visit AirNow's Phoenix page. For health guidance specific to Maricopa County, the county's Air Quality page and the Fountain Hills Air Quality and Dust Control page list contact information and county programs, including a sign-up for High Pollution Advisory alerts.
The AirNow Phoenix page will reflect any updated readings or advisories as conditions change through the evening.
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 21:21
- Maricopa County retrieved 28/08/2026 21:21
- fountainhillsaz.gov retrieved 28/08/2026 21:21
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 28/08/2026 21:21. Every claim traces to a source.
