Air Quality Forecast Guidance for Ohare Airport, IL

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 41.98 N, longitude: 87.90 W.
Ozone concentrations are presented in parts per billion (PPB).
Public comments and suggestions are encouraged.
A FAQ page is available.
More information...
24Hr Maximum
Ending
Maximum 1 Hour Average Ozone
Concentration (PPB)*
Maximum 8 Hour Average Ozone
Concentration (PPB)*
Tomorrow
(Ending 10/04, 4Z)
62
56
*Due to grid interpolation methods, the maximum 1- and 8-hour ozone concentration values may have
values slightly higher or lower than those of the corresponding hourly ozone concentrations.

Ozone
Ending Time
1 Hour Average Ozone
Concentration (PPB)
12Z Model Run
8 Hour Average Ozone
Concentration (PPB)
12Z Model Run
Tue, 03 Oct  03 PM
61
33
Tue, 03 Oct  04 PM
62
41
Tue, 03 Oct  05 PM
60
48
Tue, 03 Oct  06 PM
56
53
Tue, 03 Oct   07 PM
48
56
Tue, 03 Oct   08 PM
31
54
Tue, 03 Oct   09 PM
18
49
Tue, 03 Oct   10 PM
15
44
Tue, 03 Oct   11 PM
14
38
Wed, 04 Oct   12 AM
26
34
Wed, 04 Oct   01 AM
32
30
Wed, 04 Oct   02 AM
34
27
Wed, 04 Oct   03 AM
32
25
Wed, 04 Oct   04 AM
31
25
Wed, 04 Oct   05 AM
28
27
Wed, 04 Oct   06 AM
21
27
Wed, 04 Oct   07 AM
19
28
Wed, 04 Oct   08 AM
18
27
Wed, 04 Oct   09 AM
22
26
Wed, 04 Oct   10 AM
29
25
Wed, 04 Oct   11 AM
32
25
Wed, 04 Oct   12 PM
35
25
Wed, 04 Oct   01 PM
36
26
Wed, 04 Oct   02 PM
38
28
Wed, 04 Oct   03 PM
42
31
Wed, 04 Oct   04 PM
43
34
Wed, 04 Oct   05 PM
45
37
Wed, 04 Oct   06 PM
43
39
Wed, 04 Oct   07 PM
42
40
Wed, 04 Oct   08 PM
31
40
Wed, 04 Oct   09 PM
30
39
Wed, 04 Oct   10 PM
25
38
Wed, 04 Oct   11 PM
25
35
Thu, 05 Oct   12 AM
31
34
Thu, 05 Oct   01 AM
31
32
Thu, 05 Oct   02 AM
29
31
Thu, 05 Oct   03 AM
31
29
Thu, 05 Oct   04 AM
29
29
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Tue, 03 Oct  03 PM
0
0
Tue, 03 Oct  04 PM
0
0
Tue, 03 Oct  05 PM
0
0
Tue, 03 Oct  06 PM
0
0
Tue, 03 Oct  07 PM
0
0
Tue, 03 Oct  08 PM
0
0
Tue, 03 Oct  09 PM
0
0
Tue, 03 Oct  10 PM
0
0
Tue, 03 Oct  11 PM
0
0
Wed, 04 Oct  12 AM
0
0
Wed, 04 Oct  01 AM
0
0
Wed, 04 Oct  02 AM
0
0
Wed, 04 Oct  03 AM
0
0
Wed, 04 Oct  04 AM
0
0
Wed, 04 Oct  05 AM
0
0
Wed, 04 Oct  06 AM
0
0
Wed, 04 Oct  07 AM
0
0
Wed, 04 Oct  08 AM
0
0
Wed, 04 Oct  09 AM
0
0
Wed, 04 Oct  10 AM
0
0
Wed, 04 Oct  11 AM
0
0
Wed, 04 Oct  12 PM
0
0
Wed, 04 Oct  01 PM
0
0
Wed, 04 Oct  02 PM
0
0
Wed, 04 Oct  03 PM
0
0
Wed, 04 Oct  04 PM
0
0
Wed, 04 Oct  05 PM
0
0
Wed, 04 Oct  06 PM
0
0
Wed, 04 Oct  07 PM
0
0
Wed, 04 Oct  08 PM
0
0
National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ

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