Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 46.86 N, longitude: 121.64 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 06/10, 4Z)
37
31
*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, 09 Jun  10 AM
21
29
Fri, 09 Jun  11 AM
18
28
Fri, 09 Jun  12 PM
16
26
Fri, 09 Jun  01 PM
14
24
Fri, 09 Jun  02 PM
16
21
Fri, 09 Jun  03 PM
19
19
Fri, 09 Jun  04 PM
20
18
Fri, 09 Jun   05 PM
21
18
Fri, 09 Jun   06 PM
22
18
Fri, 09 Jun   07 PM
22
19
Fri, 09 Jun   08 PM
25
20
Fri, 09 Jun   09 PM
27
21
Fri, 09 Jun   10 PM
28
23
Fri, 09 Jun   11 PM
29
24
Sat, 10 Jun   12 AM
28
25
Sat, 10 Jun   01 AM
28
26
Sat, 10 Jun   02 AM
27
27
Sat, 10 Jun   03 AM
27
27
Sat, 10 Jun   04 AM
28
28
Sat, 10 Jun   05 AM
30
28
Sat, 10 Jun   06 AM
33
28
Sat, 10 Jun   07 AM
29
29
Sat, 10 Jun   08 AM
27
28
Sat, 10 Jun   09 AM
25
28
Sat, 10 Jun   10 AM
25
28
Sat, 10 Jun   11 AM
26
28
Sat, 10 Jun   12 PM
29
28
Sat, 10 Jun   01 PM
30
28
Sat, 10 Jun   02 PM
33
28
Sat, 10 Jun   03 PM
35
28
Sat, 10 Jun   04 PM
35
30
Sat, 10 Jun   05 PM
34
31
Sat, 10 Jun   06 PM
35
32
Sat, 10 Jun   07 PM
35
33
Sat, 10 Jun   08 PM
36
34
Sat, 10 Jun   09 PM
36
35
Sat, 10 Jun   10 PM
33
35
Sat, 10 Jun   11 PM
33
35
Sun, 11 Jun   12 AM
33
34
Sun, 11 Jun   01 AM
34
34
Sun, 11 Jun   02 AM
35
34
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, 09 Jun  10 AM
0
0
Fri, 09 Jun  11 AM
0
0
Fri, 09 Jun  12 PM
0
0
Fri, 09 Jun  01 PM
0
0
Fri, 09 Jun  02 PM
0
0
Fri, 09 Jun  03 PM
0
0
Fri, 09 Jun  04 PM
0
0
Fri, 09 Jun  05 PM
0
0
Fri, 09 Jun  06 PM
0
0
Fri, 09 Jun  07 PM
0
0
Fri, 09 Jun  08 PM
0
0
Fri, 09 Jun  09 PM
0
0
Fri, 09 Jun  10 PM
0
0
Fri, 09 Jun  11 PM
0
0
Sat, 10 Jun  12 AM
0
0
Sat, 10 Jun  01 AM
0
0
Sat, 10 Jun  02 AM
0
0
Sat, 10 Jun  03 AM
0
0
Sat, 10 Jun  04 AM
0
0
Sat, 10 Jun  05 AM
0
0
Sat, 10 Jun  06 AM
0
0
Sat, 10 Jun  07 AM
0
0
Sat, 10 Jun  08 AM
0
0
Sat, 10 Jun  09 AM
0
0
Sat, 10 Jun  10 AM
0
0
Sat, 10 Jun  11 AM
0
0
Sat, 10 Jun  12 PM
0
0
Sat, 10 Jun  01 PM
0
0
Sat, 10 Jun  02 PM
0
0
Sat, 10 Jun  03 PM
0
0
Sat, 10 Jun  04 PM
0
0
Sat, 10 Jun  05 PM
0
0
Sat, 10 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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