Arizona's Plan to Meet Federal Air Quality Standards in Phoenix-Mesa Area
Official: Air Quality State Implementation Plans; Approvals and Promulgations: Arizona; Phoenix-Mesa Nonattainment Area; Determination of Attainment by the Attainment Date but for International Emissions for the 2015 Ozone National Ambient Air Quality Standards
Reading: The EPA approval of Arizona's state implementation plan determines attainment status under the existing 2015 ozone NAAQS framework without modifying the underlying air quality standard or implementation requirements.
The rule recognizes that some air pollution affecting Arizona comes from sources in other countries, which Arizona cannot directly control.
In clear language
The EPA has approved Arizona's plan to improve air quality in the Phoenix-Mesa area by the required deadline for ozone pollution standards, accounting for pollution that comes from outside the United States. This means Arizona has shown it can meet federal air quality goals if we don't count emissions crossing the border. The rule recognizes that some air pollution affecting Arizona comes from sources in other countries, which Arizona cannot directly control.
How does this affect you?
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Who does this affect?
- Residents of Phoenix and Mesa who breathe the air and may be affected by ozone pollution levels
- Arizona state environmental agencies responsible for monitoring and improving air quality
- Businesses in the Phoenix-Mesa area that may need to follow emission reduction rules
- Border communities where international air pollution impacts are most noticeable
What can you do?
- Check the EPA website or Arizona Department of Environmental Quality for local air quality forecasts on high-pollution days and limit outdoor activity when needed
- Support local efforts to reduce vehicle emissions by using public transportation, carpooling, or driving less on high-ozone days
Timeline
- 2026-03-23: Rule posted and approved
No New Jersey official has a verified action on this policy yet.
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