# plumas-county-ca-serious · CALIFORNIA · Plumas County · PM-2.5 (2012) — Current EPA nonattainment county designations by pollutant For plumas-county-ca-serious · CALIFORNIA · Plumas County · PM-2.5 (2012), pollutant / naaqs is PM-2.5 (2012); nonattainment area name is Plumas County, CA - (Serious); partial county is yes; county or area is Plumas County; state is CALIFORNIA; data current as of is August 31, 2026, recorded from its source on 2026-08-31. - **Row ID:** plumas-county-ca-serious _(our reading, not quoted from the source)_ - **State:** CALIFORNIA _(our reading, not quoted from the source)_ - **County or area:** Plumas County _(verified: appears in the quote below)_ - **Pollutant / NAAQS:** PM-2.5 (2012) _(verified: appears in the quote below)_ - **Partial county:** yes _(our reading, not quoted from the source)_ - **Nonattainment area name:** Plumas County, CA - (Serious) _(verified: appears in the quote below)_ - **Data current as of:** August 31, 2026 _(verified: appears in the quote below)_ ## What the source says > Plumas County | PM-2.5 (2012) | * | Plumas County, CA - (Serious) ## Source - https://www3.epa.gov/airquality/greenbook/ancl.html Last verified: 2026-08-31. Review by: 2027-02-27. Part of [Current EPA nonattainment county designations by pollutant](https://referencesource.org/nonattainment-county-designations-by-pollutant/).