Highlights
- The South Scottsdale air monitor recorded PM10 at 193.0 µg/m³ at 1 p.m. Thursday, crossing AirNow's Unhealthy for Sensitive Groups breakpoint.
- The reading comes from AQS site 040133003, operated by the Maricopa County Air Quality Department.
- Ozone at the same station measured 19.0 PPB at the same hour.
- Maricopa County Air Quality Department guidance and current alerts are available at the county's air quality page.
The South Scottsdale air quality monitor recorded PM10 at 193.0 µg/m³ at 1 p.m. Thursday, July 31, 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 comes from AQS site 040133003, the agency's South Scottsdale monitoring station. Ozone at the same station measured 19.0 PPB during the same hour.
For active High Pollution Advisories, forecast conditions, and any guidance issued by Maricopa County Air Quality, check the county's air quality page or the AirNow Phoenix-area forecast. 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 31/07/2026 14:59
- Maricopa County retrieved 31/07/2026 14:59
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 31/07/2026 14:59. Every claim traces to a source.
