Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.85 N, longitude: 120.47 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 08/01, 4Z)
62
54
*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, 31 Jul  09 PM
46
54
Sat, 31 Jul  10 PM
39
52
Sat, 31 Jul  11 PM
34
50
Sun, 01 Aug  12 AM
30
47
Sun, 01 Aug  01 AM
28
43
Sun, 01 Aug  02 AM
25
38
Sun, 01 Aug  03 AM
21
34
Sun, 01 Aug  04 AM
29
31
Sun, 01 Aug  05 AM
40
31
Sun, 01 Aug  06 AM
42
31
Sun, 01 Aug  07 AM
39
32
Sun, 01 Aug  08 AM
34
32
Sun, 01 Aug  09 AM
33
33
Sun, 01 Aug  10 AM
37
34
Sun, 01 Aug  11 AM
44
37
Sun, 01 Aug  12 PM
51
40
Sun, 01 Aug  01 PM
53
42
Sun, 01 Aug  02 PM
53
43
Sun, 01 Aug  03 PM
52
45
Sun, 01 Aug  04 PM
51
47
Sun, 01 Aug   05 PM
50
49
Sun, 01 Aug   06 PM
51
51
Sun, 01 Aug   07 PM
51
52
Sun, 01 Aug   08 PM
48
51
Sun, 01 Aug   09 PM
47
50
Sun, 01 Aug   10 PM
41
49
Sun, 01 Aug   11 PM
37
47
Mon, 02 Aug   12 AM
34
45
Mon, 02 Aug   01 AM
32
43
Mon, 02 Aug   02 AM
31
40
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, 31 Jul  09 PM
0
131
Sat, 31 Jul  10 PM
0
117
Sat, 31 Jul  11 PM
131
113
Sun, 01 Aug  12 AM
228
114
Sun, 01 Aug  01 AM
106
123
Sun, 01 Aug  02 AM
170
101
Sun, 01 Aug  03 AM
46
96
Sun, 01 Aug  04 AM
90
81
Sun, 01 Aug  05 AM
0
75
Sun, 01 Aug  06 AM
0
85
Sun, 01 Aug  07 AM
0
104
Sun, 01 Aug  08 AM
105
95
Sun, 01 Aug  09 AM
0
75
Sun, 01 Aug  10 AM
53
74
Sun, 01 Aug  11 AM
21
81
Sun, 01 Aug  12 PM
61
91
Sun, 01 Aug  01 PM
158
127
Sun, 01 Aug  02 PM
140
130
Sun, 01 Aug  03 PM
24
72
Sun, 01 Aug  04 PM
0
35
Sun, 01 Aug  05 PM
0
30
Sun, 01 Aug  06 PM
0
27
Sun, 01 Aug  07 PM
0
30
Sun, 01 Aug  08 PM
0
47
Sun, 01 Aug  09 PM
0
128
Sun, 01 Aug  10 PM
0
299

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


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