South Scottsdale Ozone Hits 71.0 PPB at 5 p.m., Crossing Unhealthy-for-Sensitive-Groups Threshold

Highlights

• The South Scottsdale air monitor (AQS site 040133003) recorded ozone at 71.0 PPB at 5 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; current forecasts are available via AirNow's Phoenix-area page.

The air quality monitor at South Scottsdale recorded ozone at 71.0 PPB at 5 p.m. Wednesday, crossing AirNow's Unhealthy for Sensitive Groups breakpoint for ozone, according to EPA AirNow hourly data reported by the Maricopa County Air Quality Department.

The station — AQS site ID 040133003 — also recorded PM10 at 19.0 micrograms per cubic meter during the same hour. The ozone reading is the figure that triggered the alert threshold.

For current forecasts and any active advisories covering the Phoenix area, the Maricopa County Air Quality Department directs residents to AirNow's Phoenix-area page. Health guidance, if issued, will come from Maricopa County Air Quality.

Sources

Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.

1. 040133003 retrieved 2026-05-07T18:13:39.128822+00:00
2. Maricopa County retrieved 2026-05-07T18:13:39.128822+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 2026-05-07T18:13:39.128822+00:00. Every claim traces to a source.