Highlights
- The South Scottsdale air monitoring station logged PM10 at 807.0 micrograms per cubic meter at 4 a.m. Thursday, Aug. 20.
- The reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for PM10 particulate matter.
- Ozone at the same station measured 41.0 parts per billion during the same hour.
- Maricopa County Air Quality Department is the reporting agency; current conditions are tracked at AirNow's Phoenix-area page.
The South Scottsdale air monitoring station (AQS site ID 040133003) recorded PM10 particulate matter at 807.0 micrograms per cubic meter at 4 a.m. Thursday, Aug. 20, according to EPA AirNow hourly aggregate data reported by the Maricopa County Air Quality Department. The reading crossed AirNow's unhealthy-for-sensitive-groups breakpoint for PM10.
Ozone at the same station measured 41.0 parts per billion during the same hour, per the same report.
Readers can track current conditions and any active advisories for the Phoenix area through AirNow's official Phoenix-area page. For health guidance related to elevated particulate levels, the Maricopa County Air Quality Department is the authoritative local source.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133003 retrieved 20/08/2026 05:55
- Maricopa County retrieved 20/08/2026 05:55
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 20/08/2026 05:55. Every claim traces to a source.
