# upper-green-river-basin-area-wy-marginal · WYOMING · Sublette County · 8-Hour Ozone (2008) — Current EPA nonattainment county designations by pollutant

For upper-green-river-basin-area-wy-marginal · WYOMING · Sublette County · 8-Hour Ozone (2008), pollutant / naaqs is 8-Hour Ozone (2008); nonattainment area name is Upper Green River Basin Area, WY - (Marginal); county or area is Sublette County; state is WYOMING; data current as of is August 31, 2026, recorded from its source on 2026-08-31.

- **Row ID:** upper-green-river-basin-area-wy-marginal _(our reading, not quoted from the source)_
- **State:** WYOMING _(our reading, not quoted from the source)_
- **County or area:** Sublette County _(verified: appears in the quote below)_
- **Pollutant / NAAQS:** 8-Hour Ozone (2008) _(verified: appears in the quote below)_
- **Nonattainment area name:** Upper Green River Basin Area, WY - (Marginal) _(verified: appears in the quote below)_
- **Data current as of:** August 31, 2026 _(verified: appears in the quote below)_

## What the source says

> Sublette County | 8-Hour Ozone (2008) | | Upper Green River Basin Area, WY - (Marginal)

## 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/).