Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.82 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)
50
48
*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
49
44
Sat, 26 Sep  04 PM
50
46
Sat, 26 Sep   05 PM
49
47
Sat, 26 Sep   06 PM
48
48
Sat, 26 Sep   07 PM
48
48
Sat, 26 Sep   08 PM
43
48
Sat, 26 Sep   09 PM
41
47
Sat, 26 Sep   10 PM
41
46
Sat, 26 Sep   11 PM
41
45
Sun, 27 Sep   12 AM
40
44
Sun, 27 Sep   01 AM
39
43
Sun, 27 Sep   02 AM
38
41
Sun, 27 Sep   03 AM
36
40
Sun, 27 Sep   04 AM
35
39
Sun, 27 Sep   05 AM
34
38
Sun, 27 Sep   06 AM
34
37
Sun, 27 Sep   07 AM
33
36
Sun, 27 Sep   08 AM
31
35
Sun, 27 Sep   09 AM
33
34
Sun, 27 Sep   10 AM
37
34
Sun, 27 Sep   11 AM
41
35
Sun, 27 Sep   12 PM
43
36
Sun, 27 Sep   01 PM
44
37
Sun, 27 Sep   02 PM
45
38
Sun, 27 Sep   03 PM
46
40
Sun, 27 Sep   04 PM
46
42
Sun, 27 Sep   05 PM
44
43
Sun, 27 Sep   06 PM
41
44
Sun, 27 Sep   07 PM
42
44
Sun, 27 Sep   08 PM
40
44
Sun, 27 Sep   09 PM
37
43
Sun, 27 Sep   10 PM
33
41
Sun, 27 Sep   11 PM
30
39
Mon, 28 Sep   12 AM
30
37
Mon, 28 Sep   01 AM
30
35
Mon, 28 Sep   02 AM
31
34
Mon, 28 Sep   03 AM
31
33
Mon, 28 Sep   04 AM
31
32
Mon, 28 Sep   05 AM
33
31
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
187
240
Sat, 26 Sep  04 PM
82
190
Sat, 26 Sep  05 PM
132
161
Sat, 26 Sep  06 PM
37
102
Sat, 26 Sep  07 PM
0
90
Sat, 26 Sep  08 PM
0
69
Sat, 26 Sep  09 PM
0
94
Sat, 26 Sep  10 PM
0
120
Sat, 26 Sep  11 PM
0
118
Sun, 27 Sep  12 AM
0
101
Sun, 27 Sep  01 AM
0
126
Sun, 27 Sep  02 AM
0
173
Sun, 27 Sep  03 AM
0
179
Sun, 27 Sep  04 AM
0
180
Sun, 27 Sep  05 AM
0
162
Sun, 27 Sep  06 AM
1
143
Sun, 27 Sep  07 AM
1
142
Sun, 27 Sep  08 AM
0
143
Sun, 27 Sep  09 AM
0
147
Sun, 27 Sep  10 AM
2
151
Sun, 27 Sep  11 AM
0
150
Sun, 27 Sep  12 PM
0
128
Sun, 27 Sep  01 PM
12
121
Sun, 27 Sep  02 PM
70
121
Sun, 27 Sep  03 PM
21
133
Sun, 27 Sep  04 PM
45
147
Sun, 27 Sep  05 PM
47
180
Sun, 27 Sep  06 PM
54
281
Sun, 27 Sep  07 PM
0
334
Sun, 27 Sep  08 PM
0
340
Sun, 27 Sep  09 PM
0
328
Sun, 27 Sep  10 PM
0
261

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


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