Highlights
- West Phoenix ozone hit 82.0 PPB at 6 p.m. on July 13, crossing AirNow's Unhealthy for Sensitive Groups breakpoint.
- The reading comes from AQS site 040130019, reported by the Maricopa County Air Quality Department via EPA AirNow.
- Residents can track current conditions and any active advisories at AirNow's Phoenix-area page.
- Maricopa County offers a Rapid Response Notification System for real-time air quality alerts by location.
Ozone at the West Phoenix air monitoring station (AQS site 040130019) reached 82.0 parts per billion during the 6 p.m. hour on July 13, crossing EPA AirNow's threshold for Unhealthy for Sensitive Groups, according to the hourly aggregate published by the Maricopa County Air Quality Department.
Other pollutants recorded at the same station and hour: carbon monoxide at 0.2 PPM, nitrogen dioxide at 7.0 PPB, PM10 at 29.0 micrograms per cubic meter, and PM2.5 at 4.3 micrograms per cubic meter.
For current conditions, forecasts, and any active advisories across the Phoenix metro, the AirNow Phoenix page is the authoritative source. Health guidance, if issued, comes from Maricopa County Air Quality.
Residents who want push notifications when a High Pollution Advisory is issued or when dust levels spike at specific monitoring locations can enroll in the county's Rapid Response Notification System, which covers stations including a West 43rd Avenue site at 43rd Avenue and Broadway Road. Updated readings post hourly.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- 040130019 retrieved 13/07/2026 19:35
- Maricopa County retrieved 13/07/2026 19:35
- Maricopa County retrieved 13/07/2026 19:35
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 19:35. Every claim traces to a source.
