Arizona's Plan to Stop Pollution from Drifting to Other States
Official: Air Plan Approval; Arizona; Interstate Transport Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standards
Reading: EPA approval of Arizona's state implementation plan submission as meeting existing Clean Air Act interstate transport requirements for PM2.5 standards without substantive modification to those requirements.
This approval means Arizona's pollution control plan meets federal requirements under the Clean Air Act.
In clear language
The EPA has approved Arizona's plan to reduce air pollution that crosses state lines and affects other states' air quality. Arizona must make sure its industries and activities don't emit enough pollution to harm air quality in neighboring states. This approval means Arizona's pollution control plan meets federal requirements under the Clean Air Act.
How does this affect you?
Pick the type of resident or organization you most identify with — we'll generate a plain-language breakdown of what changes for you and what you can do about it.
Who does this affect?
- Residents in Arizona and neighboring states who breathe air affected by interstate pollution
- Arizona businesses and industries that emit air pollutants
- State environmental agencies in Arizona and downwind states
What can you do?
- Monitor local air quality reports in your area, especially if you live near Arizona or downwind regions
- Support local efforts to reduce vehicle emissions and industrial pollution in your community
Timeline
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- Effective: 2026-05-18
- 2026-04-16: EPA published this decision
- 2026-05-18: This decision became effective
No New Jersey official has a verified action on this policy yet.
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- Federal RegisterOct 19, 2026EPA Approves Arizona's Plan to Reduce Dust Pollution from Farms in West Pinal County
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- Federal RegisterOct 19, 2026EPA approval of Arizona dust control rules for air quality
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