# new-castle-county-de-serious · DELAWARE · New Castle County · 8-Hour Ozone (2015) — Current EPA nonattainment county designations by pollutant

For new-castle-county-de-serious · DELAWARE · New Castle County · 8-Hour Ozone (2015), pollutant / naaqs is 8-Hour Ozone (2015); nonattainment area name is New Castle County, DE - (Serious); county or area is New Castle County; state is DELAWARE; data current as of is August 31, 2026, recorded from its source on 2026-08-31.

- **Row ID:** new-castle-county-de-serious _(our reading, not quoted from the source)_
- **State:** DELAWARE _(our reading, not quoted from the source)_
- **County or area:** New Castle County _(verified: appears in the quote below)_
- **Pollutant / NAAQS:** 8-Hour Ozone (2015) _(verified: appears in the quote below)_
- **Nonattainment area name:** New Castle County, DE - (Serious) _(verified: appears in the quote below)_
- **Data current as of:** August 31, 2026 _(verified: appears in the quote below)_

## What the source says

> New Castle County | 8-Hour Ozone (2008) | | New Castle County, DE - (Marginal) | 8-Hour Ozone (2015) | | New Castle County, DE - (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/).