Highlights
- The Central Phoenix AQS station recorded PM10 at 615.0 micrograms per cubic meter at 5 a.m. Monday, July 13.
- That reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department is the reporting agency; current conditions and active alerts are posted at AirNow's Phoenix page.
- Other pollutants at the same station — CO, NO2, and ozone — registered within normal ranges at the same hour.
A Maricopa County Air Quality Department monitor at the Central Phoenix station (AQS site ID 040133002) recorded PM10 particulate matter at 615.0 micrograms per cubic meter at 5 a.m. Monday, July 13, according to the EPA AirNow public hourly aggregate. That reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for PM10.
Other pollutants logged at the same station and hour were within normal ranges: carbon monoxide at 0.1 PPM, nitrogen dioxide at 5.0 PPB, and ozone at 43.0 PPB.
Maricopa County operates a Rapid Response Notification System for dust and air quality events, and residents can sign up for High Pollution Advisory alerts through the county's Air Quality page. Current forecast conditions and any active alerts for the Phoenix area are available at AirNow's Phoenix page. For health guidance specific to this reading, consult 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 13/07/2026 06:35
- Maricopa County retrieved 13/07/2026 06:35
- Maricopa County retrieved 13/07/2026 06:35
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 13/07/2026 06:35. Every claim traces to a source.
