Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.58 N, longitude: 118.27 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 09/23, 4Z)
66
63
*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)

6Z Model Run
8 Hour Average Ozone
Concentration (PPB)

6Z Model Run
Wed, 22 Sep  07 AM
29
37
Wed, 22 Sep  08 AM
26
37
Wed, 22 Sep  09 AM
33
36
Wed, 22 Sep  10 AM
46
37
Wed, 22 Sep  11 AM
56
39
Wed, 22 Sep  12 PM
60
41
Wed, 22 Sep  01 PM
61
43
Wed, 22 Sep  02 PM
62
47
Wed, 22 Sep  03 PM
62
51
Wed, 22 Sep  04 PM
63
55
Wed, 22 Sep   05 PM
65
59
Wed, 22 Sep   06 PM
64
62
Wed, 22 Sep   07 PM
63
63
Wed, 22 Sep   08 PM
59
63
Wed, 22 Sep   09 PM
56
62
Wed, 22 Sep   10 PM
55
61
Wed, 22 Sep   11 PM
53
60
Thu, 23 Sep   12 AM
52
58
Thu, 23 Sep   01 AM
51
57
Thu, 23 Sep   02 AM
52
55
Thu, 23 Sep   03 AM
54
54
Thu, 23 Sep   04 AM
57
54
Thu, 23 Sep   05 AM
57
54
Thu, 23 Sep   06 AM
54
54
Thu, 23 Sep   07 AM
53
54
Thu, 23 Sep   08 AM
49
53
Thu, 23 Sep   09 AM
42
52
Thu, 23 Sep   10 AM
43
51
Thu, 23 Sep   11 AM
50
51
Thu, 23 Sep   12 PM
54
50
Thu, 23 Sep   01 PM
55
50
Thu, 23 Sep   02 PM
55
50
Thu, 23 Sep   03 PM
56
51
Thu, 23 Sep   04 PM
58
52
Thu, 23 Sep   05 PM
59
54
Thu, 23 Sep   06 PM
60
56
Thu, 23 Sep   07 PM
60
57
Thu, 23 Sep   08 PM
57
57
Thu, 23 Sep   09 PM
57
58
Thu, 23 Sep   10 PM
59
58
Thu, 23 Sep   11 PM
57
58
Fri, 24 Sep   12 AM
55
58
Fri, 24 Sep   01 AM
53
57
Fri, 24 Sep   02 AM
51
56
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Wed, 22 Sep  06 AM
191
249
Wed, 22 Sep  07 AM
201
409
Wed, 22 Sep  08 AM
331
667
Wed, 22 Sep  09 AM
1019
938
Wed, 22 Sep  10 AM
1730
883
Wed, 22 Sep  11 AM
2270
809
Wed, 22 Sep  12 PM
1225
637
Wed, 22 Sep  01 PM
429
441
Wed, 22 Sep  02 PM
116
178
Wed, 22 Sep  03 PM
153
110
Wed, 22 Sep  04 PM
26
96
Wed, 22 Sep  05 PM
60
65
Wed, 22 Sep  06 PM
16
72
Wed, 22 Sep  07 PM
16
119
Wed, 22 Sep  08 PM
22
168
Wed, 22 Sep  09 PM
0
340
Wed, 22 Sep  10 PM
328
249
Wed, 22 Sep  11 PM
431
65
Thu, 23 Sep  12 AM
49
46
Thu, 23 Sep  01 AM
0
41
Thu, 23 Sep  02 AM
3
29
Thu, 23 Sep  03 AM
3
21
Thu, 23 Sep  04 AM
0
16
Thu, 23 Sep  05 AM
0
18
Thu, 23 Sep  06 AM
0
21
Thu, 23 Sep  07 AM
0
16
Thu, 23 Sep  08 AM
0
19
Thu, 23 Sep  09 AM
0
14
Thu, 23 Sep  10 AM
0
10
Thu, 23 Sep  11 AM
0
9
Thu, 23 Sep  12 PM
0
8
Thu, 23 Sep  01 PM
1
10
Thu, 23 Sep  02 PM
0
13
Thu, 23 Sep  03 PM
0
14
Thu, 23 Sep  04 PM
0
12
Thu, 23 Sep  05 PM
0
13
Thu, 23 Sep  06 PM
2
12
Thu, 23 Sep  07 PM
0
13
Thu, 23 Sep  08 PM
0
6
Thu, 23 Sep  09 PM
0
6
Thu, 23 Sep  10 PM
0
4

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


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