Highlights
- The Central Phoenix air monitor recorded PM10 at 182.0 micrograms per cubic meter at 8 p.m. Saturday, July 11.
- That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for PM10 particulate matter.
- Ozone measured 51.0 ppb; CO and NO2 remained at low levels at the same hour.
- Maricopa County Air Quality Department is the reporting agency; current conditions are tracked at AirNow's Phoenix page.
The Central Phoenix air quality monitoring station (AQS site ID 040133002) recorded PM10 particulate matter at 182.0 micrograms per cubic meter at 8 p.m. Saturday, July 11, according to EPA AirNow hourly aggregate data reported by the Maricopa County Air Quality Department. That reading crosses AirNow's Unhealthy for Sensitive Groups breakpoint for PM10.
Other pollutants at the same station and hour were substantially lower: ozone at 51.0 ppb, nitrogen dioxide at 2.0 ppb, and carbon monoxide at 0.2 ppm.
Residents can track current conditions and any active advisories on AirNow's Phoenix-area page. Maricopa County also operates a Rapid Response Notification System for dust pollution alerts at selected monitoring locations. For health guidance specific to the reading, the county air quality department is the appropriate contact.
Updated hourly readings will reflect whether the PM10 level persists or declines through the evening.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040133002 retrieved 11/07/2026 21:22
- Maricopa County retrieved 11/07/2026 21:22
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 11/07/2026 21:22. Every claim traces to a source.
