Highlights
- The Central Phoenix air quality station recorded PM10 at 246.0 UG/M3 at 9 a.m. Thursday, Sept. 10.
- That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department is the reporting agency; residents can track current conditions and forecasts at AirNow's Phoenix page.
- Other pollutants at the same station — CO, NO2, and ozone — remained at low levels during the same hour.
The Central Phoenix air quality monitoring station recorded PM10 particulate matter at 246.0 UG/M3 at 9 a.m. Thursday, Sept. 10, according to EPA AirNow hourly data reported by the Maricopa County Air Quality Department. That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for PM10.
The station, identified by AQS site ID 040133002, logged carbon monoxide at 0.1 PPM, nitrogen dioxide at 2.0 PPB, and ozone at 30.0 PPB during the same hour, all at low levels. The elevated reading is specific to PM10 coarse particulate matter.
Residents can monitor current conditions, hourly updates, and any active advisories through AirNow's official Phoenix-area page. Maricopa County also operates a Rapid Response Notification System for dust pollution alerts at selected monitoring locations. For health guidance related to elevated PM10 levels, the Maricopa County Air Quality Department is the authoritative local source.
Updated readings for the Central Phoenix station are published hourly through the AirNow network.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133002 retrieved 10/09/2026 10:54
- Maricopa County retrieved 10/09/2026 10:54
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 10/09/2026 10:54. Every claim traces to a source.
