Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 34.73 N, longitude: 118.48 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 09/27, 4Z)
58
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)
6Z Model Run
8 Hour Average Ozone
Concentration (PPB)
6Z Model Run
Tue, 26 Sep  07 AM
22
32
Tue, 26 Sep  08 AM
24
30
Tue, 26 Sep  09 AM
32
29
Tue, 26 Sep  10 AM
40
30
Tue, 26 Sep  11 AM
47
31
Tue, 26 Sep  12 PM
50
34
Tue, 26 Sep  01 PM
54
37
Tue, 26 Sep  02 PM
55
41
Tue, 26 Sep  03 PM
56
45
Tue, 26 Sep  04 PM
55
49
Tue, 26 Sep   05 PM
56
52
Tue, 26 Sep   06 PM
58
54
Tue, 26 Sep   07 PM
58
55
Tue, 26 Sep   08 PM
54
56
Tue, 26 Sep   09 PM
52
55
Tue, 26 Sep   10 PM
48
55
Tue, 26 Sep   11 PM
44
53
Wed, 27 Sep   12 AM
40
51
Wed, 27 Sep   01 AM
38
49
Wed, 27 Sep   02 AM
39
47
Wed, 27 Sep   03 AM
39
44
Wed, 27 Sep   04 AM
37
42
Wed, 27 Sep   05 AM
34
40
Wed, 27 Sep   06 AM
31
38
Wed, 27 Sep   07 AM
25
35
Wed, 27 Sep   08 AM
29
34
Wed, 27 Sep   09 AM
37
34
Wed, 27 Sep   10 AM
43
34
Wed, 27 Sep   11 AM
47
35
Wed, 27 Sep   12 PM
51
37
Wed, 27 Sep   01 PM
54
40
Wed, 27 Sep   02 PM
56
43
Wed, 27 Sep   03 PM
55
46
Wed, 27 Sep   04 PM
55
50
Wed, 27 Sep   05 PM
55
52
Wed, 27 Sep   06 PM
56
53
Wed, 27 Sep   07 PM
52
54
Wed, 27 Sep   08 PM
47
54
Wed, 27 Sep   09 PM
46
53
Wed, 27 Sep   10 PM
45
51
Wed, 27 Sep   11 PM
43
50
Thu, 28 Sep   12 AM
41
48
Thu, 28 Sep   01 AM
37
46
Thu, 28 Sep   02 AM
36
43
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, 26 Sep  05 AM
0
0
Tue, 26 Sep  06 AM
0
0
Tue, 26 Sep  07 AM
0
0
Tue, 26 Sep  08 AM
0
0
Tue, 26 Sep  09 AM
0
0
Tue, 26 Sep  10 AM
0
0
Tue, 26 Sep  11 AM
0
0
Tue, 26 Sep  12 PM
0
0
Tue, 26 Sep  01 PM
0
0
Tue, 26 Sep  02 PM
0
0
Tue, 26 Sep  03 PM
0
0
Tue, 26 Sep  04 PM
0
0
Tue, 26 Sep  05 PM
0
0
Tue, 26 Sep  06 PM
0
0
Tue, 26 Sep  07 PM
0
0
Tue, 26 Sep  08 PM
0
0
Tue, 26 Sep  09 PM
0
0
Tue, 26 Sep  10 PM
0
0
Tue, 26 Sep  11 PM
0
0
Wed, 27 Sep  12 AM
0
0
Wed, 27 Sep  01 AM
0
0
Wed, 27 Sep  02 AM
0
0
Wed, 27 Sep  03 AM
0
0
Wed, 27 Sep  04 AM
0
0
Wed, 27 Sep  05 AM
0
0
Wed, 27 Sep  06 AM
0
0
Wed, 27 Sep  07 AM
0
0
Wed, 27 Sep  08 AM
0
0
Wed, 27 Sep  09 AM
0
0
Wed, 27 Sep  10 AM
0
0
Wed, 27 Sep  11 AM
0
0
Wed, 27 Sep  12 PM
0
0
Wed, 27 Sep  01 PM
0
0
Wed, 27 Sep  02 PM
0
0
Wed, 27 Sep  03 PM
0
0
Wed, 27 Sep  04 PM
0
0
Wed, 27 Sep  05 PM
0
0
Wed, 27 Sep  06 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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