EPA extends the South Coast's deadline to meet the fine particle air standard by five years
EPA grants California's request for five more years for the Los Angeles-South Coast Air Basin to meet the annual fine particle (PM2.5) air quality standard, finding the state has met the legal conditions for the extension.
Who it affects
Southern California air regulators and South Coast residents
When
This rule takes effect on November 2, 2026.
- : Published in the Federal Register
- : This rule takes effect
- : New deadline for the South Coast to meet the standard
Official text
FR Doc. 2026-20097: Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
On Federal Register. The official text is what counts; read it before you act.
Not legal advice. Plain-English summaries to help you find what changes and when. Not legal advice: read the official text, and ask a lawyer about your situation.