Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.51 N, longitude: 118.36 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
50
*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  02 PM
51
45
Sat, 26 Sep  03 PM
51
46
Sat, 26 Sep  04 PM
50
48
Sat, 26 Sep   05 PM
48
49
Sat, 26 Sep   06 PM
47
49
Sat, 26 Sep   07 PM
49
50
Sat, 26 Sep   08 PM
44
49
Sat, 26 Sep   09 PM
41
48
Sat, 26 Sep   10 PM
39
46
Sat, 26 Sep   11 PM
39
45
Sun, 27 Sep   12 AM
41
43
Sun, 27 Sep   01 AM
43
43
Sun, 27 Sep   02 AM
42
42
Sun, 27 Sep   03 AM
41
41
Sun, 27 Sep   04 AM
40
41
Sun, 27 Sep   05 AM
39
41
Sun, 27 Sep   06 AM
39
41
Sun, 27 Sep   07 AM
38
40
Sun, 27 Sep   08 AM
34
40
Sun, 27 Sep   09 AM
32
38
Sun, 27 Sep   10 AM
37
38
Sun, 27 Sep   11 AM
43
38
Sun, 27 Sep   12 PM
47
39
Sun, 27 Sep   01 PM
48
40
Sun, 27 Sep   02 PM
49
41
Sun, 27 Sep   03 PM
49
42
Sun, 27 Sep   04 PM
49
44
Sun, 27 Sep   05 PM
47
46
Sun, 27 Sep   06 PM
43
47
Sun, 27 Sep   07 PM
45
47
Sun, 27 Sep   08 PM
45
47
Sun, 27 Sep   09 PM
41
46
Sun, 27 Sep   10 PM
36
44
Sun, 27 Sep   11 PM
33
42
Mon, 28 Sep   12 AM
33
40
Mon, 28 Sep   01 AM
33
39
Mon, 28 Sep   02 AM
33
37
Mon, 28 Sep   03 AM
32
36
Mon, 28 Sep   04 AM
33
34
Mon, 28 Sep   05 AM
35
33
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  02 PM
321
295
Sat, 26 Sep  03 PM
244
284
Sat, 26 Sep  04 PM
284
288
Sat, 26 Sep  05 PM
200
273
Sat, 26 Sep  06 PM
51
240
Sat, 26 Sep  07 PM
0
206
Sat, 26 Sep  08 PM
0
193
Sat, 26 Sep  09 PM
0
194
Sat, 26 Sep  10 PM
0
208
Sat, 26 Sep  11 PM
0
218
Sun, 27 Sep  12 AM
0
231
Sun, 27 Sep  01 AM
0
226
Sun, 27 Sep  02 AM
0
187
Sun, 27 Sep  03 AM
0
139
Sun, 27 Sep  04 AM
0
132
Sun, 27 Sep  05 AM
0
127
Sun, 27 Sep  06 AM
0
139
Sun, 27 Sep  07 AM
0
136
Sun, 27 Sep  08 AM
0
131
Sun, 27 Sep  09 AM
0
129
Sun, 27 Sep  10 AM
0
113
Sun, 27 Sep  11 AM
0
115
Sun, 27 Sep  12 PM
14
114
Sun, 27 Sep  01 PM
15
126
Sun, 27 Sep  02 PM
0
132
Sun, 27 Sep  03 PM
7
125
Sun, 27 Sep  04 PM
0
94
Sun, 27 Sep  05 PM
4
94
Sun, 27 Sep  06 PM
4
105
Sun, 27 Sep  07 PM
0
96
Sun, 27 Sep  08 PM
0
90
Sun, 27 Sep  09 PM
0
121
Sun, 27 Sep  10 PM
0
181

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


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