Highlights
- The Central Phoenix air quality station recorded PM10 at 243.0 µg/m³ at 3 p.m. Sunday, July 12.
- That reading crosses AirNow's 'Unhealthy for Sensitive Groups' breakpoint for PM10 particulate matter.
- Maricopa County Air Quality Department is the reporting agency; current conditions and active alerts are posted at AirNow's Phoenix page.
The Maricopa County Air Quality Department recorded a PM10 concentration of 243.0 µg/m³ at the Central Phoenix monitoring station (AQS site ID 040133002) at 3 p.m. Sunday, July 12, according to EPA AirNow public hourly aggregate data. That reading crosses AirNow's threshold for the 'Unhealthy for Sensitive Groups' category for PM10 particulate matter.
Other pollutants logged at the same station and hour: carbon monoxide at 0.2 PPM, nitrogen dioxide at 2.0 PPB, and ozone at 34.0 PPB.
Readers can check current conditions, forecasts, and any active advisories for the Phoenix area at AirNow's official Phoenix page. Maricopa County also operates a Rapid Response Notification System for dust and pollution alerts at specific monitoring locations. For health guidance specific to this reading, consult Maricopa County Air Quality Department directly.
The AirNow Phoenix page will reflect updated hourly readings as conditions change 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 12/07/2026 16:35
- Maricopa County retrieved 12/07/2026 16:35
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 12/07/2026 16:35. Every claim traces to a source.
