Highlights
- The West Phoenix air quality station recorded PM10 at 336.0 UG/M3 at 7 p.m. Tuesday, crossing the unhealthy-for-sensitive-groups threshold.
- PM2.5 at the same station simultaneously read 43.2 UG/M3, also at unhealthy-for-sensitive-groups levels or worse.
- Maricopa County Air Quality Department is the reporting agency; AirNow's Phoenix-area page carries current forecasts and any active advisories.
The West Phoenix air quality monitoring station recorded PM10 at 336.0 UG/M3 at 7 p.m. Tuesday, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department. That reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for coarse particulate matter.
Fine particulate matter (PM2.5) at the same station registered 43.2 UG/M3 during the same hour, also at unhealthy-for-sensitive-groups levels or worse. Ozone read 51.0 PPB, NO2 at 4.0 PPB, and CO at 0.0 PPM.
The station's AQS site ID is 040130019. Maricopa County operates a Rapid Response Notification System that covers several West Valley locations, including a West 43rd Avenue monitoring point at 43rd Avenue and Broadway Road.
Readers can track current conditions and any active advisories for the Phoenix area through AirNow's official Phoenix page. For health guidance specific to Maricopa County, contact the Air Quality Department directly.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040130019 retrieved 04/08/2026 20:48
- Maricopa County retrieved 04/08/2026 20:48
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 04/08/2026 20:48. Every claim traces to a source.
