Highlights
- Maricopa County has issued an Ozone High Pollution Advisory covering Wednesday, August 19, and Thursday, August 20, 2026.
- The advisory is driven by ozone levels expected to accumulate beyond the federal health standard for ozone.
- The advisory was issued by Maricopa County and published at 9:55 a.m. Wednesday morning.
Maricopa County has issued an Ozone High Pollution Advisory covering Wednesday, August 19, and Thursday, August 20, 2026, according to a county notice published at 9:55 a.m. Wednesday.
The advisory is in effect because ozone levels are expected to accumulate enough to exceed the federal health standard for ozone.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- Maricopa County retrieved 19/08/2026 16:55
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 19/08/2026 16:55. Every claim traces to a source.
