Highlights
- Central Phoenix station AQS 040133002 recorded PM10 at 157.0 micrograms per cubic meter at 7 a.m. on Aug. 11.
- The reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department is the reporting agency; residents can sign up for High Pollution Advisory alerts at maricopa.gov.
- Current forecasts and active alerts for the Phoenix area are available at AirNow's official Phoenix page.
The Central Phoenix air quality monitoring station logged PM10 particulate matter at 157.0 micrograms per cubic meter at 7 a.m. Tuesday, Aug. 11, crossing AirNow's Unhealthy for Sensitive Groups threshold for that pollutant, according to EPA AirNow hourly data reported by the Maricopa County Air Quality Department.
The reading comes from AQS site ID 040133002, the Central Phoenix station. Other pollutants recorded at the same hour were within lower ranges: carbon monoxide at 0.1 parts per million, nitrogen dioxide at 3.0 parts per billion, and ozone at 53.0 parts per billion.
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 across the county.
Updated forecasts and any active alerts for the Phoenix area are posted to AirNow's Phoenix page. Readers seeking health guidance should consult Maricopa County 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.
- 040133002 retrieved 11/08/2026 08:45
- Maricopa County retrieved 11/08/2026 08:45
- Maricopa County retrieved 11/08/2026 08:45
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 11/08/2026 08:45. Every claim traces to a source.
