Highlights
- The Fountain Hills air monitor logged ozone at 88.0 parts per billion at 2 a.m. on July 15, 2026.
- That level crosses AirNow's 'Unhealthy for Sensitive Groups' breakpoint for ozone.
- Maricopa County Air Quality Department is the reporting agency; current conditions are tracked at AirNow's Phoenix-area page.
The Maricopa County Air Quality Department monitoring station in Fountain Hills recorded ozone at 88.0 parts per billion at 2 a.m. on July 15, 2026, according to EPA AirNow hourly aggregate data. That reading crosses AirNow's threshold for the Unhealthy for Sensitive Groups category for ozone.
The station's AQS site ID is 040139704. Readings are updated hourly; current conditions and any active advisories for the Phoenix area are available at AirNow's Phoenix page. For health guidance specific to this reading, consult Maricopa County Air Quality Department.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 15/07/2026 03:52
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 15/07/2026 03:52. Every claim traces to a source.
