Highlights
- The South Scottsdale air monitor recorded PM10 at 186.0 UG/M3 at noon on July 31, crossing the unhealthy-for-sensitive-groups breakpoint.
- The reading comes from AQS site 040133003, operated by the Maricopa County Air Quality Department and reported through EPA AirNow.
- Ozone at the same station measured 17.0 PPB at the same hour, within normal range.
- Readers can check current conditions and any active advisories at AirNow's Phoenix-area page.
The air quality monitor in South Scottsdale recorded PM10 at 186.0 UG/M3 at noon Friday, crossing AirNow's threshold for the unhealthy-for-sensitive-groups category, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department.
The reading comes from AQS site 040133003, the South Scottsdale monitoring station. Ozone at the same station measured 17.0 PPB during the same hour.
Maricopa County Air Quality Department tracks PM10 levels across the valley and issues High Pollution Advisories when conditions warrant. Readers seeking current conditions, forecasts, or any active county advisories should check the AirNow Phoenix-area page and the Maricopa County Air Quality Department directly for any guidance issued in response to this reading.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133003 retrieved 31/07/2026 13:59
- Maricopa County retrieved 31/07/2026 13:59
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 31/07/2026 13:59. Every claim traces to a source.
