Highlights
- The West Phoenix air monitoring station recorded PM2.5 at 59.2 µg/m³ at 10 a.m. on July 5, crossing AirNow's Unhealthy for Sensitive Groups breakpoint.
- PM10 also registered at 74.0 µg/m³ at the same station and hour, indicating elevated coarse-particle pollution alongside fine-particle levels.
- Maricopa County Air Quality Department operates the station; readers can track current conditions and forecasts at AirNow's Phoenix-area page.
The West Phoenix air monitoring station (AQS site ID 040130019), operated by the Maricopa County Air Quality Department, recorded PM2.5 at 59.2 µg/m³ at 10 a.m. Sunday, July 5, a level that crosses AirNow's Unhealthy for Sensitive Groups breakpoint for fine-particle pollution.
The same hour's readings showed PM10 at 74.0 µg/m³, ozone at 3.0 PPB, nitrogen dioxide at 27.0 PPB, and carbon monoxide at 0.7 PPM, according to the EPA AirNow public hourly aggregate sourced from files.airnowtech.org.
For current conditions, active alerts, and the Phoenix-area forecast, the AirNow Phoenix page is updated hourly. Maricopa County also operates a Rapid Response Notification System for dust and pollution alerts at specific monitoring locations. Any health guidance should be sought directly from Maricopa County Air Quality Department.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040130019 retrieved 05/07/2026 11:44
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 05/07/2026 11:44. Every claim traces to a source.
