8-hour Exceedances Summary
Values in each column is 8-hour concentration - standard of 70 parts per billion;
Region |
County |
Site |
9/20/24 |
9/19/24 |
9/18/24 |
9/17/24 |
9/12/24 |
8/27/24 |
8/26/24 |
8/24/24 |
8/8/24 |
7/31/24 |
7/15/24 |
7/11/24 |
6/21/24 |
6/15/24 |
6/12/24 |
Chicago Metropolitan |
Cook |
Alsip |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cook |
Chicago - Com Ed |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cook |
Chicago - SWFP |
|
|
|
|
|
81 |
|
|
77 |
|
|
|
|
|
|
Cook |
Chicago - Taft |
|
73 |
|
|
|
71 |
73 |
|
|
75 |
|
|
|
|
|
Cook |
Cicero |
|
|
|
|
|
|
|
|
|
|
|
|
71 |
|
|
Cook |
Des Plaines |
|
75 |
|
|
|
|
|
74 |
|
75 |
|
|
|
|
|
Cook |
Evanston |
|
73 |
71 |
|
|
92 |
76 |
|
|
77 |
71 |
|
|
|
79 |
Cook |
Lemont |
|
|
71 |
|
72 |
|
|
|
|
|
|
|
|
|
|
Cook |
Northbrook |
|
71 |
|
|
|
72 |
|
|
|
74 |
|
|
|
|
|
Cook |
Schiller Park |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DuPage |
Lisle |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Kane |
Elgin |
|
|
72 |
|
|
|
|
|
|
|
|
|
|
|
|
Lake |
Zion |
|
|
|
|
|
80 |
78 |
|
|
78 |
79 |
|
|
|
82 |
McHenry |
Cary |
|
|
73 |
|
|
|
|
|
|
|
|
|
|
|
|
Will |
Braidwood |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Metro-East |
Jersey |
Jerseyville |
|
|
|
|
|
|
|
|
|
|
|
|
|
74 |
|
Madison |
Alton |
|
|
71 |
|
|
80 |
|
|
|
|
|
|
|
78 |
|
Madison |
Maryville |
|
|
|
|
|
80 |
|
|
|
|
|
71 |
|
74 |
|
Madison |
Wood River |
72 |
|
|
|
|
86 |
|
|
|
|
|
|
|
76 |
|
Randolph |
Houston |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
St. Clair |
East St. Louis |
|
|
|
|
|
74 |
|
|
|
|
|
|
|
74 |
|
Northern Illinois |
Rock Island |
Rock Island |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Winnebago |
Loves Park |
|
|
76 |
71 |
72 |
|
|
|
|
|
|
|
|
|
|
West Central Illinois |
Adams |
Quincy |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Macoupin |
Nilwood |
|
|
|
|
|
|
|
|
|
|
|
|
|
72 |
|
Peoria |
Peoria |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Peoria |
Peoria Heights |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sangamon |
Springfield |
|
|
|
|
|
|
|
|
|
|
|
|
|
72 |
|
East Central Illinois |
Champaign |
Thomasboro |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
McLean |
Normal |
|
|
|
|
|
|
|
|
|
|
|
|
|
74 |
|
Macon |
Decatur |
|
|
|
|
|
|
|
|
|
|
|
|
|
71 |
|
Southeast Illinois |
Effingham |
Effingham |
|
|
|
|
|
|
|
|
|
|
|
|
|
71 |
|
Hamilton |
Knight Prairie Township |
|
|
|
|
|
|
|
|
|
|
|
|
|
74 |
|