Highlights
- The Fountain Hills AirNow monitoring station recorded ozone at 78.0 PPB at 1 a.m. on July 31, 2026.
- That reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
- The reporting agency is the Maricopa County Air Quality Department; residents can check current conditions at AirNow's Phoenix-area page.
The EPA AirNow monitoring station in Fountain Hills (AQS site ID 040139704) recorded ozone at 78.0 parts per billion at 1 a.m. on July 31, 2026, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for ozone, according to the Maricopa County Air Quality Department.
The reading was reported through EPA AirNow's public hourly aggregate. Residents seeking current forecasts or active alerts for the Phoenix area can visit AirNow's Phoenix page. For guidance specific to Maricopa County, the Maricopa County Air Quality Department can be reached at 602-506-6010.
The Fountain Hills town website also directs residents to Maricopa County Air Quality for local regulations and programs. Updated hourly readings for the station are available through the AirNow platform.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 31/07/2026 02:59
- fountainhillsaz.gov retrieved 31/07/2026 02:59
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 31/07/2026 02:59. Every claim traces to a source.
