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Air Quality Information

Illinois Ozone 8-hour Exceedance Summary

8-hour Exceedances Summary

Values in each column is 8-hour concentration - standard of 75 parts per billion;

Region  County Site 5/1  5/14 
Chicago Metropolitan  Cook Alsip    
Cook Chicago - Com Ed    
Cook Chicago - SWFP    
Cook Chicago - Taft    
Cook Chicago - University    
Cook Cicero    
Cook Des Plaines    
Cook Evanston   80 
Cook Lemont    
Cook Northbrook   81 
Cook Schiller Park    
DuPage Lisle    
Kane Elgin    
Lake Zion 77  81 
McHenry Cary    
Will Braidwood    
Metro-East  Jersey Jerseyville    
Madison Alton    
Madison Maryville    
Madison Wood River    
Randolph Houston    
St. Clair East St. Louis    
Northern Illinois  Rock Island Rock Island    
Winnebago Loves Park    
West Central Illinois  Adams Quincy    
Macoupin Nilwood    
Peoria Peoria    
Peoria Peoria Heights    
Sangamon Springfield    
East Central Illinois  Champaign Thomasboro    
McLean Normal    
Macon Decatur    
Southeast Illinois  Effingham Effingham    
Hamilton Knight Prairie Township    

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About the Bureau of Air
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Publications
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AirFacts
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Emissions Reduction Market System (ERMS)
Asbestos Program
Other Bureau of Air Programs
NOx SIP Call and CAIR NOx Trading Programs
Illinois Green Fleets
MACT Training
Regulatory Development of Key Rules (CAIR/Mercury)
Illinois Climate Change Advisory Group
Registration of Smaller Sources (ROSS)
Small Business Environmental Assistance Program
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