Highlights

The Maricopa County Air Quality Department's monitoring station in Fountain Hills recorded ozone at 83.0 parts per billion at 9 p.m. Wednesday, Aug. 26, crossing AirNow's Unhealthy for Sensitive Groups threshold for ozone.

The reading was logged at AQS site 040139704 and reported through the EPA AirNow public hourly aggregate. Maricopa County Air Quality Department is the reporting agency for the station.

Residents seeking current conditions, forecasts, or any active advisories for the Phoenix area can visit AirNow's Phoenix page. For guidance specific to Maricopa County programs and regulations, the county's air quality division can be reached at 602-506-6010 or through the 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.

  1. 040139704 retrieved 26/08/2026 22:22
  2. fountainhillsaz.gov retrieved 26/08/2026 22:22

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 26/08/2026 22:22. Every claim traces to a source.