Highlights
- The West Phoenix air monitoring station recorded ozone at 84.0 PPB at 8 p.m. on July 5, 2026.
- That reading crossed AirNow's 'Unhealthy for Sensitive Groups' breakpoint for ozone.
- Maricopa County Air Quality Department is the reporting agency; residents can track current conditions at AirNow's Phoenix-area page.
- Carbon monoxide, nitrogen dioxide, and particulate readings at the same station remained below alert thresholds at the same hour.
The West Phoenix air monitoring station (AQS site ID 040130019) recorded ozone at 84.0 PPB at 8 p.m. Saturday, crossing AirNow's "Unhealthy for Sensitive Groups" breakpoint for ozone, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department.
Other pollutants measured at the same station during the same hour were below alert thresholds: carbon monoxide at 0.2 PPM, nitrogen dioxide at 4.0 PPB, PM10 at 21.0 UG/M3, and PM2.5 at 13.9 UG/M3.
Residents seeking current forecasts, active advisories, or health guidance should check AirNow's Phoenix-area page or contact the Maricopa County Air Quality Department directly. The department also operates a Rapid Response Notification System for dust and pollution alerts at specific monitoring locations across the valley.
Updated hourly readings for the West Phoenix 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.
- 040130019 retrieved 05/07/2026 21:44
- Maricopa County retrieved 05/07/2026 21:44
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 05/07/2026 21:44. Every claim traces to a source.
