Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 35.24 N, longitude: 117.30 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 03/20, 4Z)
48
45
*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
Tue, 19 Mar  07 AM
25
29
Tue, 19 Mar  08 AM
23
27
Tue, 19 Mar  09 AM
21
25
Tue, 19 Mar  10 AM
29
25
Tue, 19 Mar  11 AM
37
26
Tue, 19 Mar  12 PM
40
28
Tue, 19 Mar  01 PM
41
30
Tue, 19 Mar  02 PM
44
33
Tue, 19 Mar  03 PM
46
35
Tue, 19 Mar  04 PM
47
38
Tue, 19 Mar   05 PM
47
41
Tue, 19 Mar   06 PM
48
44
Tue, 19 Mar   07 PM
47
45
Tue, 19 Mar   08 PM
42
45
Tue, 19 Mar   09 PM
38
45
Tue, 19 Mar   10 PM
33
43
Tue, 19 Mar   11 PM
32
42
Wed, 20 Mar   12 AM
38
41
Wed, 20 Mar   01 AM
38
39
Wed, 20 Mar   02 AM
39
38
Wed, 20 Mar   03 AM
38
37
Wed, 20 Mar   04 AM
35
36
Wed, 20 Mar   05 AM
35
36
Wed, 20 Mar   06 AM
30
36
Wed, 20 Mar   07 AM
28
35
Wed, 20 Mar   08 AM
26
34
Wed, 20 Mar   09 AM
27
32
Wed, 20 Mar   10 AM
33
32
Wed, 20 Mar   11 AM
42
32
Wed, 20 Mar   12 PM
48
34
Wed, 20 Mar   01 PM
52
36
Wed, 20 Mar   02 PM
54
39
Wed, 20 Mar   03 PM
52
42
Wed, 20 Mar   04 PM
51
45
Wed, 20 Mar   05 PM
51
48
Wed, 20 Mar   06 PM
51
50
Wed, 20 Mar   07 PM
50
51
Wed, 20 Mar   08 PM
50
52
Wed, 20 Mar   09 PM
50
51
Wed, 20 Mar   10 PM
49
51
Wed, 20 Mar   11 PM
49
50
Thu, 21 Mar   12 AM
52
50
Thu, 21 Mar   01 AM
48
50
Thu, 21 Mar   02 AM
43
49
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Tue, 19 Mar  04 AM
0
0
Tue, 19 Mar  05 AM
0
0
Tue, 19 Mar  06 AM
0
0
Tue, 19 Mar  07 AM
0
0
Tue, 19 Mar  08 AM
0
0
Tue, 19 Mar  09 AM
0
0
Tue, 19 Mar  10 AM
0
0
Tue, 19 Mar  11 AM
0
0
Tue, 19 Mar  12 PM
0
0
Tue, 19 Mar  01 PM
0
0
Tue, 19 Mar  02 PM
0
0
Tue, 19 Mar  03 PM
0
0
Tue, 19 Mar  04 PM
0
0
Tue, 19 Mar  05 PM
0
0
Tue, 19 Mar  06 PM
0
0
Tue, 19 Mar  07 PM
0
0
Tue, 19 Mar  08 PM
0
0
Tue, 19 Mar  09 PM
0
0
Tue, 19 Mar  10 PM
0
0
Tue, 19 Mar  11 PM
0
0
Wed, 20 Mar  12 AM
0
0
Wed, 20 Mar  01 AM
0
0
Wed, 20 Mar  02 AM
0
0
Wed, 20 Mar  03 AM
0
0
Wed, 20 Mar  04 AM
0
0
Wed, 20 Mar  05 AM
0
0
Wed, 20 Mar  06 AM
0
0
Wed, 20 Mar  07 AM
0
0
Wed, 20 Mar  08 AM
0
0
Wed, 20 Mar  09 AM
0
0
Wed, 20 Mar  10 AM
0
0
Wed, 20 Mar  11 AM
0
0
Wed, 20 Mar  12 PM
0
0
Wed, 20 Mar  01 PM
0
0
Wed, 20 Mar  02 PM
0
0
Wed, 20 Mar  03 PM
0
0
Wed, 20 Mar  04 PM
0
0
Wed, 20 Mar  05 PM
0
0
Wed, 20 Mar  06 PM
0
0

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


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