Fountain Hills Ozone Hits Unhealthy-for-Sensitive-Groups Level at 6 p.m. Wednesday

Highlights

• The Fountain Hills AirNow monitoring station recorded ozone at 72.0 PPB at 6 p.m. on May 7, 2026.
• The reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.
• Maricopa County Air Quality Department is the reporting agency for the station.
• Readers can track current conditions and forecasts at AirNow's official Phoenix-area page.

The EPA AirNow monitoring station in Fountain Hills recorded ozone at 72.0 parts per billion at 6 p.m. Wednesday, May 7, according to the EPA AirNow public hourly aggregate reported by the Maricopa County Air Quality Department. The reading crossed AirNow's Unhealthy for Sensitive Groups breakpoint for ozone.

The station is identified by AQS site ID 040139704 and the reading was recorded at the 18:00 local hour. The Maricopa County Air Quality Department is the reporting agency for the station.

For the current forecast and any active alerts for the Phoenix area, the AirNow Phoenix page has up-to-date readings. For health guidance specific to Maricopa County, the Maricopa County Air Quality Department is the authoritative source. Updated hourly readings will reflect whether conditions improve through the evening.

Sources

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1. 040139704 retrieved 2026-05-07T19:13:29.274360+00:00

Authored by the_wire. 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 2026-05-07T19:13:29.274360+00:00. Every claim traces to a source.