Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.56 N, longitude: 118.28 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 09/21, 4Z)
55
51
*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, 20 Sep  11 PM
40
45
Mon, 21 Sep  12 AM
41
44
Mon, 21 Sep  01 AM
44
42
Mon, 21 Sep  02 AM
43
42
Mon, 21 Sep  03 AM
42
41
Mon, 21 Sep  04 AM
38
41
Mon, 21 Sep  05 AM
37
40
Mon, 21 Sep  06 AM
35
40
Mon, 21 Sep  07 AM
34
39
Mon, 21 Sep  08 AM
34
38
Mon, 21 Sep  09 AM
36
37
Mon, 21 Sep  10 AM
38
37
Mon, 21 Sep  11 AM
44
37
Mon, 21 Sep  12 PM
49
38
Mon, 21 Sep  01 PM
54
41
Mon, 21 Sep  02 PM
57
43
Mon, 21 Sep  03 PM
58
46
Mon, 21 Sep  04 PM
58
49
Mon, 21 Sep   05 PM
57
52
Mon, 21 Sep   06 PM
58
54
Mon, 21 Sep   07 PM
55
56
Mon, 21 Sep   08 PM
49
56
Mon, 21 Sep   09 PM
49
55
Mon, 21 Sep   10 PM
48
54
Mon, 21 Sep   11 PM
46
52
Tue, 22 Sep   12 AM
44
51
Tue, 22 Sep   01 AM
45
49
Tue, 22 Sep   02 AM
44
47
Tue, 22 Sep   03 AM
45
46
Tue, 22 Sep   04 AM
43
45
Tue, 22 Sep   05 AM
44
45
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, 20 Sep  11 PM
1432
106
Mon, 21 Sep  12 AM
1062
71
Mon, 21 Sep  01 AM
141
43
Mon, 21 Sep  02 AM
0
17
Mon, 21 Sep  03 AM
0
3
Mon, 21 Sep  04 AM
539
54
Mon, 21 Sep  05 AM
2032
124
Mon, 21 Sep  06 AM
2061
125
Mon, 21 Sep  07 AM
1629
119
Mon, 21 Sep  08 AM
1507
124
Mon, 21 Sep  09 AM
1107
115
Mon, 21 Sep  10 AM
494
101
Mon, 21 Sep  11 AM
204
73
Mon, 21 Sep  12 PM
63
94
Mon, 21 Sep  01 PM
24
88
Mon, 21 Sep  02 PM
34
78
Mon, 21 Sep  03 PM
38
72
Mon, 21 Sep  04 PM
15
53
Mon, 21 Sep  05 PM
6
58
Mon, 21 Sep  06 PM
18
70
Mon, 21 Sep  07 PM
60
132
Mon, 21 Sep  08 PM
515
179
Mon, 21 Sep  09 PM
363
192
Mon, 21 Sep  10 PM
759
158

National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


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