Highlights
- The South Scottsdale monitoring station (AQS 040133003) recorded PM10 at 1,108.0 µg/m³ at 3 a.m. Monday, July 13.
- The reading crossed AirNow's threshold for Unhealthy for Sensitive Groups or worse for PM10 particulate matter.
- Ozone at the same station and hour registered 51.0 ppb.
- Maricopa County Air Quality Department is the reporting agency; current forecasts are available at AirNow's Phoenix-area page.
The South Scottsdale air quality monitoring station logged PM10 particulate matter at 1,108.0 µg/m³ at 3 a.m. Monday, July 13, 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 Unhealthy for Sensitive Groups breakpoint for PM10.
Ozone at the same station (AQS site ID 040133003) registered 51.0 ppb during the same hour.
Residents seeking current readings, forecasts, or any active advisories for the Phoenix area can check AirNow's Phoenix page. For guidance specific to Maricopa County, the Air Quality Department issues High Pollution Advisories and offers email and text alerts when dust or pollution levels rise at monitored locations.
The Maricopa County Air Quality Department is expected to update monitoring data on its standard hourly cycle.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133003 retrieved 13/07/2026 04:35
- Maricopa County retrieved 13/07/2026 04:35
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 13/07/2026 04:35. Every claim traces to a source.
