Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.60 N, longitude: 118.44 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)
58
54
*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
Mon, 21 Sep  03 AM
43
42
Mon, 21 Sep  04 AM
38
42
Mon, 21 Sep  05 AM
35
41
Mon, 21 Sep  06 AM
34
40
Mon, 21 Sep  07 AM
34
40
Mon, 21 Sep  08 AM
34
39
Mon, 21 Sep  09 AM
37
38
Mon, 21 Sep  10 AM
39
37
Mon, 21 Sep  11 AM
46
37
Mon, 21 Sep  12 PM
52
39
Mon, 21 Sep  01 PM
58
42
Mon, 21 Sep  02 PM
60
45
Mon, 21 Sep  03 PM
60
48
Mon, 21 Sep  04 PM
60
51
Mon, 21 Sep   05 PM
60
54
Mon, 21 Sep   06 PM
63
57
Mon, 21 Sep   07 PM
60
59
Mon, 21 Sep   08 PM
53
59
Mon, 21 Sep   09 PM
50
58
Mon, 21 Sep   10 PM
48
57
Mon, 21 Sep   11 PM
47
55
Tue, 22 Sep   12 AM
46
53
Tue, 22 Sep   01 AM
46
52
Tue, 22 Sep   02 AM
45
49
Tue, 22 Sep   03 AM
45
47
Tue, 22 Sep   04 AM
42
46
Tue, 22 Sep   05 AM
41
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
Mon, 21 Sep  03 AM
56
19
Mon, 21 Sep  04 AM
0
49
Mon, 21 Sep  05 AM
0
37
Mon, 21 Sep  06 AM
0
0
Mon, 21 Sep  07 AM
146
48
Mon, 21 Sep  08 AM
174
53
Mon, 21 Sep  09 AM
0
0
Mon, 21 Sep  10 AM
0
0
Mon, 21 Sep  11 AM
132
22
Mon, 21 Sep  12 PM
279
80
Mon, 21 Sep  01 PM
104
57
Mon, 21 Sep  02 PM
47
53
Mon, 21 Sep  03 PM
213
89
Mon, 21 Sep  04 PM
131
122
Mon, 21 Sep  05 PM
109
161
Mon, 21 Sep  06 PM
101
240
Mon, 21 Sep  07 PM
0
313
Mon, 21 Sep  08 PM
0
244
Mon, 21 Sep  09 PM
0
143
Mon, 21 Sep  10 PM
0
100

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


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