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 01/22, 4Z)
7
12
*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
Sun, 21 Jan  02 PM
3
2
Sun, 21 Jan  03 PM
2
2
Sun, 21 Jan  04 PM
1
2
Sun, 21 Jan  05 PM
0
2
Sun, 21 Jan   06 PM
0
2
Sun, 21 Jan   07 PM
0
2
Sun, 21 Jan   08 PM
0
1
Sun, 21 Jan   09 PM
1
1
Sun, 21 Jan   10 PM
7
1
Sun, 21 Jan   11 PM
18
3
Mon, 22 Jan   12 AM
18
6
Mon, 22 Jan   01 AM
15
7
Mon, 22 Jan   02 AM
13
9
Mon, 22 Jan   03 AM
12
11
Mon, 22 Jan   04 AM
8
11
Mon, 22 Jan   05 AM
3
12
Mon, 22 Jan   06 AM
2
11
Mon, 22 Jan   07 AM
0
9
Mon, 22 Jan   08 AM
0
7
Mon, 22 Jan   09 AM
1
5
Mon, 22 Jan   10 AM
2
3
Mon, 22 Jan   11 AM
5
3
Mon, 22 Jan   12 PM
9
3
Mon, 22 Jan   01 PM
14
4
Mon, 22 Jan   02 PM
19
6
Mon, 22 Jan   03 PM
22
9
Mon, 22 Jan   04 PM
17
11
Mon, 22 Jan   05 PM
8
12
Mon, 22 Jan   06 PM
6
13
Mon, 22 Jan   07 PM
4
12
Mon, 22 Jan   08 PM
5
12
Mon, 22 Jan   09 PM
23
13
Mon, 22 Jan   10 PM
27
14
Mon, 22 Jan   11 PM
23
14
Tue, 23 Jan   12 AM
21
15
Tue, 23 Jan   01 AM
21
16
Tue, 23 Jan   02 AM
22
18
Tue, 23 Jan   03 AM
23
21
Tue, 23 Jan   04 AM
23
23
Tue, 23 Jan   05 AM
21
23
Tue, 23 Jan   06 AM
11
21
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sun, 21 Jan  02 PM
0
0
Sun, 21 Jan  03 PM
0
0
Sun, 21 Jan  04 PM
0
0
Sun, 21 Jan  05 PM
0
0
Sun, 21 Jan  06 PM
0
0
Sun, 21 Jan  07 PM
0
0
Sun, 21 Jan  08 PM
0
0
Sun, 21 Jan  09 PM
0
0
Sun, 21 Jan  10 PM
0
0
Sun, 21 Jan  11 PM
0
0
Mon, 22 Jan  12 AM
0
0
Mon, 22 Jan  01 AM
0
0
Mon, 22 Jan  02 AM
0
0
Mon, 22 Jan  03 AM
0
0
Mon, 22 Jan  04 AM
0
0
Mon, 22 Jan  05 AM
0
0
Mon, 22 Jan  06 AM
0
0
Mon, 22 Jan  07 AM
0
0
Mon, 22 Jan  08 AM
0
0
Mon, 22 Jan  09 AM
0
0
Mon, 22 Jan  10 AM
0
0
Mon, 22 Jan  11 AM
0
0
Mon, 22 Jan  12 PM
0
0
Mon, 22 Jan  01 PM
0
0
Mon, 22 Jan  02 PM
0
0
Mon, 22 Jan  03 PM
0
0
Mon, 22 Jan  04 PM
0
0
Mon, 22 Jan  05 PM
0
0
Mon, 22 Jan  06 PM
0
0
Mon, 22 Jan  07 PM
0
0
Mon, 22 Jan  08 PM
0
0
Mon, 22 Jan  09 PM
0
0
Mon, 22 Jan  10 PM
0
0
Mon, 22 Jan  11 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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