Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 47.40 N, longitude: 121.48 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 06/07, 4Z)
57
51
*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
Tue, 06 Jun  01 PM
47
39
Tue, 06 Jun  02 PM
47
42
Tue, 06 Jun  03 PM
47
45
Tue, 06 Jun  04 PM
48
46
Tue, 06 Jun   05 PM
49
47
Tue, 06 Jun   06 PM
52
48
Tue, 06 Jun   07 PM
55
49
Tue, 06 Jun   08 PM
57
50
Tue, 06 Jun   09 PM
53
51
Tue, 06 Jun   10 PM
48
51
Tue, 06 Jun   11 PM
45
51
Wed, 07 Jun   12 AM
43
50
Wed, 07 Jun   01 AM
42
49
Wed, 07 Jun   02 AM
38
48
Wed, 07 Jun   03 AM
35
45
Wed, 07 Jun   04 AM
36
43
Wed, 07 Jun   05 AM
36
40
Wed, 07 Jun   06 AM
36
39
Wed, 07 Jun   07 AM
33
37
Wed, 07 Jun   08 AM
40
37
Wed, 07 Jun   09 AM
48
38
Wed, 07 Jun   10 AM
50
39
Wed, 07 Jun   11 AM
51
41
Wed, 07 Jun   12 PM
51
43
Wed, 07 Jun   01 PM
52
45
Wed, 07 Jun   02 PM
54
47
Wed, 07 Jun   03 PM
57
50
Wed, 07 Jun   04 PM
62
53
Wed, 07 Jun   05 PM
67
56
Wed, 07 Jun   06 PM
71
58
Wed, 07 Jun   07 PM
74
61
Wed, 07 Jun   08 PM
73
64
Wed, 07 Jun   09 PM
67
66
Wed, 07 Jun   10 PM
62
67
Wed, 07 Jun   11 PM
60
67
Thu, 08 Jun   12 AM
58
66
Thu, 08 Jun   01 AM
58
65
Thu, 08 Jun   02 AM
53
63
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, 06 Jun  01 PM
0
0
Tue, 06 Jun  02 PM
0
0
Tue, 06 Jun  03 PM
0
0
Tue, 06 Jun  04 PM
0
0
Tue, 06 Jun  05 PM
0
0
Tue, 06 Jun  06 PM
0
0
Tue, 06 Jun  07 PM
0
0
Tue, 06 Jun  08 PM
0
0
Tue, 06 Jun  09 PM
0
0
Tue, 06 Jun  10 PM
0
0
Tue, 06 Jun  11 PM
0
0
Wed, 07 Jun  12 AM
0
0
Wed, 07 Jun  01 AM
0
0
Wed, 07 Jun  02 AM
0
0
Wed, 07 Jun  03 AM
0
0
Wed, 07 Jun  04 AM
0
0
Wed, 07 Jun  05 AM
0
0
Wed, 07 Jun  06 AM
0
0
Wed, 07 Jun  07 AM
0
0
Wed, 07 Jun  08 AM
0
0
Wed, 07 Jun  09 AM
0
0
Wed, 07 Jun  10 AM
0
0
Wed, 07 Jun  11 AM
0
0
Wed, 07 Jun  12 PM
0
0
Wed, 07 Jun  01 PM
0
0
Wed, 07 Jun  02 PM
0
0
Wed, 07 Jun  03 PM
0
0
Wed, 07 Jun  04 PM
0
0
Wed, 07 Jun  05 PM
0
0
Wed, 07 Jun  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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