Cities with the most
| City | Inspection stations |
|---|
Overture Maps Places (release 2026-10-21.0) · CDLA Permissive 2.0 / Apache 2.0 / CC0
Largest brands and chains
| Brand or chain | Locations |
|---|---|
| Clean Air Car Check | 7 |
All inspection stations 9
| Name | City |
|---|---|
| Clean Air Car Check | Crown Point |
| Gary Indiana Air Team Car Check | Gary |
| Mike's Emission Clinic | Gary |
| Clean Air Car Check | Griffith |
| Clean Air Car Check | Hammond |
| Clean Air Car Check | Hobart |
| Clean Air Car Check | Portage |
| Clean Air Car Check | Valparaiso |
| OpacitAir Smoke School | Washington |