Ozone (O3) Data
IDEM's Air Monitoring Sites are polled hourly every day in order to obtain the most current information on the air quality throughout the state. Click on the map or table below to find the most recent Ozone Emission readings for the location nearest you:
Ozone Monitor Site List
| Region | County | City | Site |
|---|---|---|---|
| Northwest | Lake | Hammond | Ham - 141st St |
| Lake | Gary | Gary - IITRI | |
| Lake | Whiting | Whiting HS | |
| LaPorte | Michigan City | MC - W 4th St | |
| LaPorte | LaPorte | LaPorte - E. Lincolnway | |
| Porter | Ogden Dunes | OD - Diana Rd | |
| Porter | Valparaiso | Valparaiso | |
| North Central | Elkhart | Bristol | Bristol Elem Sch |
| St. Joseph | Granger | Granger Fire Sta | |
| St. Joseph | Potato Creek SP | ||
| St. Joseph | South Bend | SB - N. Ironwood Ave | |
| Cass, MI | Cassopolis | Ross Beatty HS | |
| Northeast | Allen | Fort Wayne | FW - Beacon St |
| Allen | Leo | Leo HS | |
| Huntington | Roanoke | Roanoke Elem. Sch | |
| West Central | Carroll | Flora | Flora Airport |
| Vigo | Sandcut | Sandcut | |
| Vigo | Terre Haute | TH - Lafayette Ave | |
| Clark, IL | West Union | West Union | |
| East Central | Boone | Whitestown | Whitestown |
| Delaware | Albany | Albany Elem Sch | |
| Hamilton | Noblesville | Noblesville J HS | |
| Hancock | Fortville | Fortville | |
| Hendricks | Avon | Avon | |
| Johnson | Trafalgar | Trafalgar | |
| Madison | Emporia | East Elem Sch | |
| Marion | Indianapolis | Indpls - Fort Harrison. | |
| Marion | Indianapolis | Indpls - Harding St | |
| Marion | Indianapolis | Indpls - E 16th St | |
| Morgan | Monrovia | Monrovia | |
| Shelby | Fairland | Fairland | |
| Southwest | Greene | Plummer | Plummer |
| Perry | Leopold | Perry Central HS | |
| Posey | St. Philips | St. Philips | |
| Vanderburgh | Evansville | Ev - Mill Rd Fire Sta | |
| Vanderburgh | Inglefield | Scott Elem Sch | |
| Warrick | Boonville | Boonville HS | |
| Warrick | Dayville | Dayville | |
| Warrick | Lynnville | Tecumseh HS | |
| Southeast | Clark | Charlestown | Ctown - SR 62 |
| Floyd | New Albany | N Alb - Gr Valley El Sch | |
| Jackson | Brownstown | Brownstown | |
| Statewide | |||
Air Ambient Monitor Links
