Highlights
- PM10 at the South Scottsdale monitoring station reached 183.0 µg/m³ at 2 p.m. Tuesday, August 4.
- The reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for coarse particulate matter.
- Ozone at the same station registered 27.0 ppb during the same hour.
- Readers can track current and forecast conditions at AirNow's Phoenix-area page for active alerts.
The South Scottsdale air quality monitoring station recorded PM10 at 183.0 µg/m³ at 2 p.m. Tuesday, August 4, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for coarse particulate matter, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department.
The reading came from AQS site ID 040133003 in South Scottsdale. Ozone at the same station during the same hour registered 27.0 ppb.
Maricopa County Air Quality Department is the reporting agency for the station. Readers seeking current forecasts, active advisories, or health guidance should consult the AirNow Phoenix-area page and the Maricopa County Air Quality Department directly. The county also offers email and text alerts when a High Pollution Advisory is issued or when dust pollution levels rise at selected monitoring locations.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133003 retrieved 04/08/2026 15:48
- Maricopa County retrieved 04/08/2026 15:48
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 04/08/2026 15:48. Every claim traces to a source.
