Highlights
- The West Phoenix AQS monitoring station recorded ozone at 81.0 PPB at 10 p.m. on July 22, 2026.
- That reading crossed 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 page.
The West Phoenix air quality monitoring station (AQS site ID 040130019) recorded ozone at 81.0 PPB at 10 p.m. Wednesday, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for ozone, according to EPA AirNow hourly aggregate data reported by the Maricopa County Air Quality Department.
Other pollutants at the station at the same hour: carbon monoxide at 0.1 PPM, nitrogen dioxide at 3.0 PPB, PM10 at 9.0 UG/M3, and PM2.5 at 4.5 UG/M3.
For the current forecast and any active advisories, the Maricopa County Air Quality Department directs residents to AirNow's Phoenix-area page. Residents can also sign up for High Pollution Advisory alerts through Maricopa County's notification system.
Updated hourly readings for the Phoenix metro are available at AirNow.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040130019 retrieved 22/07/2026 23:17
- Maricopa County retrieved 22/07/2026 23:17
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 22/07/2026 23:17. Every claim traces to a source.
