Cook County, ILLINOIS — 8-Hour Ozone (2015) nonattainment — Chicago, IL-IN-WI - (Serious)
What is the pollutant / naaqs for Cook County, ILLINOIS — 8-Hour Ozone (2015) nonattainment — Chicago, IL-IN-WI - (Serious)?
For Cook County, ILLINOIS, pollutant / naaqs is 8-Hour Ozone (2015); nonattainment area name is Chicago, IL-IN-WI - (Serious); data current as of is September 30, 2026, verified against its source on 2026-10-05.
Cook County | 8-Hour Ozone (2015) | | Chicago, IL-IN-WI - (Serious)
— www3.epa.gov, retrieved 2026-10-05
- Row ID
- chicago-il-in-wi-serious our reading
- State
- ILLINOIS our reading
- County or area
- Cook County verified
- Pollutant / NAAQS
- 8-Hour Ozone (2015) verified
- Nonattainment area name
- Chicago, IL-IN-WI - (Serious) verified
- Data current as of
- September 30, 2026
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- www3.epa.govhttps://www3.epa.gov/airquality/greenbook/ancl.html