Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.81 N, longitude: 118.46 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)
53
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
Mon, 21 Sep  12 AM
35
42
Mon, 21 Sep  01 AM
36
40
Mon, 21 Sep  02 AM
36
38
Mon, 21 Sep  03 AM
36
37
Mon, 21 Sep  04 AM
34
36
Mon, 21 Sep  05 AM
34
35
Mon, 21 Sep  06 AM
33
35
Mon, 21 Sep  07 AM
31
34
Mon, 21 Sep  08 AM
32
34
Mon, 21 Sep  09 AM
34
34
Mon, 21 Sep  10 AM
38
34
Mon, 21 Sep  11 AM
43
35
Mon, 21 Sep  12 PM
48
37
Mon, 21 Sep  01 PM
53
39
Mon, 21 Sep  02 PM
55
42
Mon, 21 Sep  03 PM
56
45
Mon, 21 Sep  04 PM
56
48
Mon, 21 Sep   05 PM
56
51
Mon, 21 Sep   06 PM
56
53
Mon, 21 Sep   07 PM
56
54
Mon, 21 Sep   08 PM
53
55
Mon, 21 Sep   09 PM
49
55
Mon, 21 Sep   10 PM
45
53
Mon, 21 Sep   11 PM
46
52
Tue, 22 Sep   12 AM
45
51
Tue, 22 Sep   01 AM
42
49
Tue, 22 Sep   02 AM
39
47
Tue, 22 Sep   03 AM
38
44
Tue, 22 Sep   04 AM
37
42
Tue, 22 Sep   05 AM
37
41
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  12 AM
738
278
Mon, 21 Sep  01 AM
1888
318
Mon, 21 Sep  02 AM
3837
328
Mon, 21 Sep  03 AM
2455
129
Mon, 21 Sep  04 AM
303
15
Mon, 21 Sep  05 AM
59
4
Mon, 21 Sep  06 AM
43
5
Mon, 21 Sep  07 AM
84
6
Mon, 21 Sep  08 AM
87
9
Mon, 21 Sep  09 AM
518
25
Mon, 21 Sep  10 AM
1096
108
Mon, 21 Sep  11 AM
646
143
Mon, 21 Sep  12 PM
254
97
Mon, 21 Sep  01 PM
66
76
Mon, 21 Sep  02 PM
63
66
Mon, 21 Sep  03 PM
3
78
Mon, 21 Sep  04 PM
0
88
Mon, 21 Sep  05 PM
4
81
Mon, 21 Sep  06 PM
0
84
Mon, 21 Sep  07 PM
2
82
Mon, 21 Sep  08 PM
7
133
Mon, 21 Sep  09 PM
1
171
Mon, 21 Sep  10 PM
0
144

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


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