8-hour Exceedances Summary
Values in each column is 8-hour concentration - standard of 70 parts per billion;
Region |
County |
Site |
6/3/23 |
6/2/23 |
6/1/23 |
5/31/23 |
5/30/23 |
5/29/23 |
5/28/23 |
5/24/23 |
5/23/23 |
5/22/23 |
5/11/23 |
4/14/23 |
Chicago Metropolitan |
Cook |
Alsip |
78 |
85 |
|
|
78 |
74 |
|
|
80 |
|
|
|
Cook |
Chicago - Com Ed |
75 |
83 |
72 |
|
71 |
|
|
|
76 |
|
|
|
Cook |
Chicago - SWFP |
|
73 |
|
|
72 |
|
|
|
71 |
|
75 |
83 |
Cook |
Chicago - Taft |
71 |
77 |
73 |
|
|
|
|
|
72 |
|
|
|
Cook |
Cicero |
74 |
79 |
|
|
|
|
|
|
78 |
|
|
74 |
Cook |
Des Plaines |
74 |
82 |
78 |
|
72 |
73 |
|
|
77 |
|
75 |
76 |
Cook |
Evanston |
|
76 |
72 |
|
74 |
|
|
|
71 |
|
74 |
83 |
Cook |
Lemont |
81 |
85 |
|
|
80 |
73 |
|
|
79 |
71 |
|
|
Cook |
Northbrook |
72 |
77 |
79 |
|
74 |
|
|
|
71 |
|
75 |
82 |
Cook |
Schiller Park |
73 |
74 |
|
|
|
73 |
|
|
|
|
|
|
DuPage |
Lisle |
72 |
82 |
|
|
72 |
71 |
|
|
76 |
|
|
|
Kane |
Elgin |
76 |
87 |
71 |
|
79 |
78 |
|
|
82 |
75 |
72 |
|
Lake |
Zion |
|
78 |
73 |
|
75 |
|
|
|
|
|
75 |
81 |
McHenry |
Cary |
73 |
83 |
79 |
|
74 |
74 |
|
|
79 |
71 |
71 |
|
Will |
Braidwood |
80 |
86 |
|
|
72 |
75 |
|
73 |
79 |
71 |
|
|
Metro-East |
Jersey |
Jerseyville |
84 |
75 |
|
|
78 |
76 |
|
82 |
|
|
|
|
Madison |
Alton |
82 |
73 |
|
74 |
76 |
75 |
|
80 |
|
|
|
|
Madison |
Maryville |
83 |
75 |
|
78 |
76 |
75 |
|
81 |
|
|
|
|
Madison |
Wood River |
81 |
73 |
|
76 |
74 |
74 |
|
77 |
|
|
|
|
Randolph |
Houston |
87 |
72 |
|
|
73 |
76 |
|
77 |
|
|
|
|
St. Clair |
East St. Louis |
84 |
|
|
|
76 |
76 |
|
77 |
|
|
|
|
Northern Illinois |
Rock Island |
Rock Island |
83 |
|
|
|
77 |
79 |
|
75 |
75 |
|
|
|
Winnebago |
Loves Park |
76 |
80 |
71 |
|
80 |
71 |
|
|
74 |
|
|
|
West Central Illinois |
Adams |
Quincy |
81 |
|
|
|
76 |
74 |
|
71 |
|
|
|
|
Macoupin |
Nilwood |
79 |
75 |
|
71 |
|
73 |
|
79 |
|
|
|
|
Peoria |
Peoria |
83 |
80 |
|
75 |
76 |
76 |
|
86 |
73 |
|
|
|
Peoria |
Peoria Heights |
82 |
80 |
|
75 |
77 |
75 |
|
86 |
75 |
72 |
|
|
Sangamon |
Springfield |
81 |
77 |
|
73 |
75 |
73 |
71 |
80 |
71 |
|
|
|
East Central Illinois |
Champaign |
Thomasboro |
76 |
75 |
|
|
|
|
|
78 |
|
|
|
|
McLean |
Normal |
78 |
80 |
|
|
71 |
|
|
81 |
73 |
|
|
|
Macon |
Decatur |
82 |
79 |
|
74 |
75 |
|
|
79 |
72 |
|
|
|
Southeast Illinois |
Effingham |
Effingham |
76 |
76 |
|
|
78 |
|
|
|
|
|
|
|
Hamilton |
Knight Prairie Township |
77 |
72 |
|
|
73 |
|
|
74 |
|
|
|
|