Highlights
- The South Scottsdale air monitor recorded PM10 at 344.0 µg/m³ at 4 a.m. Monday, Aug. 31.
- That reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for PM10 particulate matter.
- Ozone at the same station registered 41.0 ppb during the same hour.
- Maricopa County Air Quality Department is the reporting agency; current conditions are available via AirNow's Phoenix-area page.
The South Scottsdale air quality monitor recorded PM10 particulate matter at 344.0 µg/m³ at 4 a.m. Monday, Aug. 31, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for that pollutant, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department.
The reading came from AQS site 040133003, the South Scottsdale monitoring station. Ozone at the same station during the same hour registered 41.0 ppb.
For current conditions, forecasts, and any active alerts covering the Phoenix metro, the AirNow Phoenix-area page is the authoritative source. For health guidance specific to Maricopa County, contact the 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.
- 040133003 retrieved 31/08/2026 05:22
- Maricopa County retrieved 31/08/2026 05:22
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 31/08/2026 05:22. Every claim traces to a source.
