Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.38 N, longitude: 120.84 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)
41
39
*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
40
38
Sat, 31 Jul  10 PM
36
37
Sat, 31 Jul  11 PM
33
37
Sun, 01 Aug  12 AM
31
36
Sun, 01 Aug  01 AM
28
35
Sun, 01 Aug  02 AM
26
34
Sun, 01 Aug  03 AM
26
32
Sun, 01 Aug  04 AM
27
31
Sun, 01 Aug  05 AM
25
29
Sun, 01 Aug  06 AM
24
28
Sun, 01 Aug  07 AM
26
27
Sun, 01 Aug  08 AM
26
26
Sun, 01 Aug  09 AM
26
26
Sun, 01 Aug  10 AM
31
26
Sun, 01 Aug  11 AM
33
27
Sun, 01 Aug  12 PM
32
28
Sun, 01 Aug  01 PM
32
29
Sun, 01 Aug  02 PM
38
31
Sun, 01 Aug  03 PM
42
33
Sun, 01 Aug  04 PM
42
34
Sun, 01 Aug   05 PM
42
36
Sun, 01 Aug   06 PM
42
38
Sun, 01 Aug   07 PM
43
39
Sun, 01 Aug   08 PM
40
40
Sun, 01 Aug   09 PM
37
41
Sun, 01 Aug   10 PM
33
40
Sun, 01 Aug   11 PM
30
39
Mon, 02 Aug   12 AM
28
37
Mon, 02 Aug   01 AM
27
35
Mon, 02 Aug   02 AM
25
33
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
152
Sat, 31 Jul  10 PM
0
121
Sat, 31 Jul  11 PM
0
84
Sun, 01 Aug  12 AM
26
104
Sun, 01 Aug  01 AM
153
86
Sun, 01 Aug  02 AM
0
90
Sun, 01 Aug  03 AM
10
93
Sun, 01 Aug  04 AM
0
95
Sun, 01 Aug  05 AM
0
114
Sun, 01 Aug  06 AM
0
108
Sun, 01 Aug  07 AM
0
110
Sun, 01 Aug  08 AM
0
107
Sun, 01 Aug  09 AM
0
43
Sun, 01 Aug  10 AM
0
31
Sun, 01 Aug  11 AM
0
25
Sun, 01 Aug  12 PM
0
19
Sun, 01 Aug  01 PM
0
16
Sun, 01 Aug  02 PM
0
21
Sun, 01 Aug  03 PM
0
36
Sun, 01 Aug  04 PM
0
100
Sun, 01 Aug  05 PM
0
265
Sun, 01 Aug  06 PM
0
257
Sun, 01 Aug  07 PM
0
281
Sun, 01 Aug  08 PM
0
256
Sun, 01 Aug  09 PM
0
238
Sun, 01 Aug  10 PM
0
287

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


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