Highlights
- The Fountain Hills air quality station recorded ozone at 73.0 PPB at 1 a.m. Sunday, Aug. 9, 2026.
- That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
- Maricopa County Air Quality Department is the reporting agency; current conditions are available at AirNow's Phoenix-area page.
The Maricopa County Air Quality Department monitor in Fountain Hills recorded ozone at 73.0 parts per billion at 1 a.m. Sunday, Aug. 9, 2026, crossing AirNow's Unhealthy for Sensitive Groups threshold for ozone.
The reading comes from AQS site 040139704, the county's Fountain Hills station, as reported through the EPA AirNow public hourly aggregate feed.
Residents seeking current readings, forecasts, and any active advisories for the Phoenix area can check AirNow's Phoenix page. For health guidance specific to the reading, the Maricopa County Air Quality Department is the authoritative source; the county's air quality information line is listed at maricopa.gov/1244/Air-Quality.
The Fountain Hills town website also directs residents to the county for air quality and dust control questions, noting the department's contact line at 602-506-6010.
Check AirNow's Phoenix-area page for updated hourly readings as Sunday morning progresses.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 09/08/2026 02:45
- fountainhillsaz.gov retrieved 09/08/2026 02:45
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 09/08/2026 02:45. Every claim traces to a source.
