Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 40.45 N, longitude: 119.93 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 07/31, 4Z)
58
53
*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
Fri, 30 Jul  10 PM
50
53
Fri, 30 Jul  11 PM
49
52
Sat, 31 Jul  12 AM
48
52
Sat, 31 Jul  01 AM
43
51
Sat, 31 Jul  02 AM
39
49
Sat, 31 Jul  03 AM
34
46
Sat, 31 Jul  04 AM
32
43
Sat, 31 Jul  05 AM
30
41
Sat, 31 Jul  06 AM
26
38
Sat, 31 Jul  07 AM
28
35
Sat, 31 Jul  08 AM
33
33
Sat, 31 Jul  09 AM
43
33
Sat, 31 Jul  10 AM
49
34
Sat, 31 Jul  11 AM
52
37
Sat, 31 Jul  12 PM
51
39
Sat, 31 Jul  01 PM
49
41
Sat, 31 Jul  02 PM
49
44
Sat, 31 Jul  03 PM
50
47
Sat, 31 Jul  04 PM
54
50
Sat, 31 Jul   05 PM
61
52
Sat, 31 Jul   06 PM
61
53
Sat, 31 Jul   07 PM
52
54
Sat, 31 Jul   08 PM
51
54
Sat, 31 Jul   09 PM
52
54
Sat, 31 Jul   10 PM
54
55
Sat, 31 Jul   11 PM
53
55
Sun, 01 Aug   12 AM
51
55
Sun, 01 Aug   01 AM
47
53
Sun, 01 Aug   02 AM
43
50
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Fri, 30 Jul  10 PM
0
1
Fri, 30 Jul  11 PM
2
0
Sat, 31 Jul  12 AM
5
0
Sat, 31 Jul  01 AM
0
2
Sat, 31 Jul  02 AM
0
3
Sat, 31 Jul  03 AM
0
3
Sat, 31 Jul  04 AM
0
3
Sat, 31 Jul  05 AM
0
3
Sat, 31 Jul  06 AM
0
5
Sat, 31 Jul  07 AM
0
13
Sat, 31 Jul  08 AM
0
51
Sat, 31 Jul  09 AM
0
78
Sat, 31 Jul  10 AM
0
94
Sat, 31 Jul  11 AM
0
89
Sat, 31 Jul  12 PM
83
75
Sat, 31 Jul  01 PM
166
73
Sat, 31 Jul  02 PM
163
125
Sat, 31 Jul  03 PM
312
169
Sat, 31 Jul  04 PM
51
67
Sat, 31 Jul  05 PM
26
25
Sat, 31 Jul  06 PM
0
19
Sat, 31 Jul  07 PM
0
23
Sat, 31 Jul  08 PM
36
29
Sat, 31 Jul  09 PM
0
23
Sat, 31 Jul  10 PM
0
22

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


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