"This map shows the boundaries of the designated St. Louis, MO-IL PM2.5 nonattainment area. It includes the boundaries of associated 8-hour ozone nonattainment areas, as well as any associated MPOs. The map is intended to depict the extent of PM2.5 nonattainment in this area, and how the boundaries of the PM2.5 area, 8-hour area, and the MPO planning area relate to each other."
- St. Louis, MO-IL PM2.5 Nonattainment Area
- ILLINOIS
- Madison Co
- Monroe Co
- Randolph Co (P)
- St Clair Co
- MISSOURI
- Franklin Co
- Jefferson Co
- St Charles Co
- St Louis
- St Louis Co
- ILLINOIS
- St. Louis, MO-IL 8-hour Ozone Nonattainment Area
- ILLINOIS
- Jersey Co
- Madison Co
- Monroe Co
- St Clair Co
- MISSOURI
- Franklin Co
- Jefferson Co
- St Charles Co
- St Louis
- St Louis Co
- ILLINOIS
- East-West Gateway Council of Governments
- ILLINOIS
- Madison Co
- Monroe Co
- St Clair Co
- MISSOURI
- Franklin Co
- Jefferson Co
- St Charles Co
- St Louis
- St Louis Co
- ILLINOIS
