Highlights
- The South Scottsdale monitoring station (AQS 040133003) recorded PM10 at 2,121.0 µg/m³ at 5 a.m. Sunday, July 12.
- The reading crossed AirNow's threshold for Unhealthy for Sensitive Groups or worse for PM10 particulate matter.
- Ozone at the same station read 40.0 ppb during the same hour.
- Maricopa County Air Quality Department is the reporting agency; current conditions are available on the AirNow Phoenix page.
The South Scottsdale air monitoring station logged PM10 particulate matter at 2,121.0 µg/m³ at 5 a.m. Sunday, July 12, according to an hourly aggregate published by the EPA AirNow system and reported by the Maricopa County Air Quality Department. The reading crossed AirNow's threshold for Unhealthy for Sensitive Groups or worse for PM10.
Ozone at the same station, AQS site ID 040133003, read 40.0 ppb during the same hour.
The Maricopa County Air Quality Department operates the monitoring network and issues High Pollution Advisories when conditions warrant. Residents can sign up for email or text alerts through the county's air quality page. For the current Phoenix-area forecast and any active advisories, check the AirNow Phoenix forecast page directly; the Signal will update this brief if the county issues formal guidance.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133003 retrieved 12/07/2026 06:22
- Maricopa County retrieved 12/07/2026 06:22
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 12/07/2026 06:22. Every claim traces to a source.
