Highlights
- The Central Phoenix monitoring station recorded PM10 at 183.0 micrograms per cubic meter at 7 a.m. Sunday, July 12.
- That reading crossed EPA AirNow's unhealthy-for-sensitive-groups breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department operates the station; residents can check current conditions and any active alerts at AirNow's Phoenix page.
The Maricopa County Air Quality Department monitoring station in Central Phoenix recorded PM10 particulate matter at 183.0 micrograms per cubic meter at 7 a.m. Sunday, July 12, according to EPA AirNow hourly aggregate data. That reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for PM10.
Other pollutants at the same station and hour were well within normal ranges: carbon monoxide at 0.1 PPM, nitrogen dioxide at 1.0 PPB, and ozone at 38.0 PPB.
The station's AQS site ID is 040133002. Maricopa County also operates a Rapid Response Notification System that sends email and text alerts when pollution levels rise at selected monitoring locations across the county.
Current conditions, forecasts, and any active advisories for the Phoenix area are available at AirNow's Phoenix page. Residents with air quality concerns can contact the county directly through the reporting form listed on the Maricopa County Air Quality site.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133002 retrieved 12/07/2026 08:22
- Maricopa County retrieved 12/07/2026 08:22
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 12/07/2026 08:22. Every claim traces to a source.
