Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.77 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 09/27, 4Z)
51
49
*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
Sat, 26 Sep  03 PM
51
45
Sat, 26 Sep  04 PM
50
47
Sat, 26 Sep   05 PM
49
48
Sat, 26 Sep   06 PM
48
49
Sat, 26 Sep   07 PM
48
49
Sat, 26 Sep   08 PM
42
48
Sat, 26 Sep   09 PM
40
47
Sat, 26 Sep   10 PM
40
46
Sat, 26 Sep   11 PM
41
45
Sun, 27 Sep   12 AM
41
44
Sun, 27 Sep   01 AM
40
43
Sun, 27 Sep   02 AM
39
42
Sun, 27 Sep   03 AM
38
40
Sun, 27 Sep   04 AM
37
40
Sun, 27 Sep   05 AM
35
39
Sun, 27 Sep   06 AM
35
38
Sun, 27 Sep   07 AM
34
37
Sun, 27 Sep   08 AM
32
36
Sun, 27 Sep   09 AM
33
35
Sun, 27 Sep   10 AM
37
35
Sun, 27 Sep   11 AM
41
36
Sun, 27 Sep   12 PM
44
36
Sun, 27 Sep   01 PM
45
38
Sun, 27 Sep   02 PM
46
39
Sun, 27 Sep   03 PM
47
41
Sun, 27 Sep   04 PM
47
43
Sun, 27 Sep   05 PM
45
44
Sun, 27 Sep   06 PM
42
45
Sun, 27 Sep   07 PM
43
45
Sun, 27 Sep   08 PM
42
45
Sun, 27 Sep   09 PM
38
44
Sun, 27 Sep   10 PM
34
42
Sun, 27 Sep   11 PM
31
40
Mon, 28 Sep   12 AM
31
38
Mon, 28 Sep   01 AM
31
37
Mon, 28 Sep   02 AM
32
35
Mon, 28 Sep   03 AM
31
34
Mon, 28 Sep   04 AM
32
32
Mon, 28 Sep   05 AM
33
32
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sat, 26 Sep  03 PM
132
171
Sat, 26 Sep  04 PM
52
129
Sat, 26 Sep  05 PM
99
116
Sat, 26 Sep  06 PM
19
72
Sat, 26 Sep  07 PM
0
63
Sat, 26 Sep  08 PM
0
42
Sat, 26 Sep  09 PM
0
57
Sat, 26 Sep  10 PM
0
79
Sat, 26 Sep  11 PM
0
74
Sun, 27 Sep  12 AM
0
64
Sun, 27 Sep  01 AM
0
102
Sun, 27 Sep  02 AM
0
199
Sun, 27 Sep  03 AM
0
220
Sun, 27 Sep  04 AM
0
186
Sun, 27 Sep  05 AM
0
141
Sun, 27 Sep  06 AM
0
107
Sun, 27 Sep  07 AM
0
108
Sun, 27 Sep  08 AM
0
114
Sun, 27 Sep  09 AM
0
128
Sun, 27 Sep  10 AM
3
131
Sun, 27 Sep  11 AM
0
138
Sun, 27 Sep  12 PM
0
117
Sun, 27 Sep  01 PM
14
101
Sun, 27 Sep  02 PM
72
90
Sun, 27 Sep  03 PM
9
95
Sun, 27 Sep  04 PM
35
106
Sun, 27 Sep  05 PM
48
137
Sun, 27 Sep  06 PM
52
225
Sun, 27 Sep  07 PM
0
299
Sun, 27 Sep  08 PM
0
345
Sun, 27 Sep  09 PM
0
322
Sun, 27 Sep  10 PM
0
239

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


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