Highlights
- The Central Phoenix air quality station recorded PM10 at 163.0 micrograms per cubic meter at 9 a.m. on Aug. 4, 2026.
- That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department operates the station; residents can track current conditions and forecasts at AirNow.
The Central Phoenix air quality monitoring station recorded PM10 particulate matter at 163.0 micrograms per cubic meter at 9 a.m. Tuesday, 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.
Other pollutants at the same station and hour showed lower readings: carbon monoxide at 0.1 PPM, nitrogen dioxide at 2.0 PPB, and ozone at 41.0 PPB.
The station's AQS site ID is 040133002. Maricopa County operates a Rapid Response Notification System that sends email and text alerts when a High Pollution Advisory is issued or when dust pollution levels rise at selected monitoring locations; sign-up is available through the county's notification page.
For current forecast conditions and any active alerts for the Phoenix area, the AirNow Phoenix page is the authoritative source. Health guidance, if any is issued, will come from Maricopa County Air Quality Department.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133002 retrieved 04/08/2026 10:48
- Maricopa County retrieved 04/08/2026 10:48
- Maricopa County retrieved 04/08/2026 10:48
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 10:48. Every claim traces to a source.
