Highlights
- The Fountain Hills air quality station recorded ozone at 86.0 parts per billion at 11 p.m. on June 20, 2026.
- The reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for ozone, according to EPA AirNow data.
- The Maricopa County Air Quality Department operates the station; current conditions and forecasts are available at AirNow's Phoenix-area page.
The Maricopa County Air Quality Department's monitoring station in Fountain Hills recorded ozone at 86.0 parts per billion at 11 p.m. on June 20, 2026, crossing AirNow's unhealthy-for-sensitive-groups breakpoint for ozone.
The reading was reported by the EPA AirNow public hourly aggregate from AQS site ID 040139704, assigned to the Fountain Hills station. The Maricopa County Air Quality Department is the reporting agency for this monitor.
Readers seeking current conditions, forecasts, or any active advisories for the Phoenix area can check the AirNow Phoenix page directly. For health guidance specific to sensitive groups, the Maricopa County Air Quality Department is the authoritative local 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 21/06/2026 00:56
- Maricopa County retrieved 21/06/2026 00:56
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 21/06/2026 00:56. Every claim traces to a source.
