Illinois PM2.5 24-hour Exceedance Summary

Value in each column is 24-hour concentration - standard of 35 micrograms per cubic meter

(values in micrograms per cubic meter)

Region  County Site 2024 None to date 
Chicago Metropolitan  Cook Alsip  
Cook Chicago-Com Ed  
Cook Chicago-Springfield Pump  
Cook Chicago-Mayfair  
Cook Chicago-Washington HS  
Cook Cicero  
Cook Des Plaines  
Cook Kingery Near-Road  
Cook McCook  
Cook Northbrook  
Cook Schiller Park  
Cook Summit  
Du Page Naperville  
Kane Aurora  
Kane Elgin  
McHenry Cary  
Will Braidwood  
Will Joliet  
Metro-East  Jersey Jerseyville  
Madison Alton  
Madison Granite City-23rd&Madison  
Madison Granite City-Gateway Medical  
Madison Wood River  
Randolph Houston  
St Clair E St. Louis  
Northern Illinois  Rock Island Rock Island  
Winnebago Rockford  
West Central Illinois  Peoria Peoria  
Sangamon Springfield  
East Central Illinois  Champaign Bondville  
Champaign Champaign  
Macon Decatur  
McLean Normal  
Southeast Illinois  Hamilton Knight Prairie