Recent Updates: Federal Register Notices Published or Effective After October 31, 2026

Data is current as of October 31, 2026

is displayed for notices published or effective within 30 days of the report "As of" date.
Federal Register Notices not in this Green Book will be available in reports in the next Green Book.
The "FR" links below will display Federal Register Notices from the Government Publishing Office (GPO) website.

NAAQS / Publication Date	Area Name / Action / Status / Effective Date / FRN Link
PM-2.5 (2012)
10/01/2026	Los Angeles-South Coast Air Basin, CA (CA)
	Attainment Date Extension
	Final Approval
	Effective: 11/02/2026
	91 FR 62316

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