Highlights
- The Fountain Hills air monitor recorded ozone at 86.0 PPB at 10 p.m. Tuesday, June 10.
- That level crosses 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).
- Readers 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 86.0 parts per billion at 10 p.m. Tuesday, June 10, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for ozone, according to EPA AirNow public hourly aggregate data.
The station, identified by AQS site ID 040139704, reported the reading as part of the agency's standard hourly air quality network. Maricopa County Air Quality Department is the reporting agency for the site.
Residents seeking current conditions, forecasts, or any active advisories for the Phoenix area can monitor the AirNow Phoenix-area page. For health guidance specific to the reading, Maricopa County Air Quality Department is the authoritative source.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040139704 retrieved 10/06/2026 23:18
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 10/06/2026 23:18. Every claim traces to a source.
