EPA Says Portola, California Air Quality Met Federal Standards
Official: Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California
Reading: The EPA is confirming that an existing air quality standard was achieved by the attainment deadline, without changing the standard itself or creating new protections.
The area is no longer classified as failing to meet national air quality standards.
In clear language
The EPA has determined that Portola, California met federal air quality standards for fine particulate matter by the required deadline of December 31, 2025. This decision is based on air quality measurements from 2023 through 2025. The area is no longer classified as failing to meet national air quality standards.
How does this affect you?
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Who does this affect?
- Residents of Portola and Plumas County, California who breathe the air
- California state environmental agencies responsible for air quality monitoring
- Businesses in the area subject to emissions regulations
What can you do?
- If you live in the Portola area, you can check the EPA's AirNow website (airnow.gov) to monitor local air quality in real time
Timeline
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- Effective: 2026-09-14
- 2025-12-31: Attainment deadline that Portola met
- 2026-09-14: Effective date of this EPA determination
No New Jersey official has a verified action on this policy yet.
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