Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 47.47 N, longitude: 123.93 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 06/07, 4Z)
40
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
Tue, 06 Jun  01 PM
39
36
Tue, 06 Jun  02 PM
39
37
Tue, 06 Jun  03 PM
38
39
Tue, 06 Jun  04 PM
36
39
Tue, 06 Jun   05 PM
35
38
Tue, 06 Jun   06 PM
36
38
Tue, 06 Jun   07 PM
38
38
Tue, 06 Jun   08 PM
38
38
Tue, 06 Jun   09 PM
35
37
Tue, 06 Jun   10 PM
32
36
Tue, 06 Jun   11 PM
29
35
Wed, 07 Jun   12 AM
25
34
Wed, 07 Jun   01 AM
24
32
Wed, 07 Jun   02 AM
24
31
Wed, 07 Jun   03 AM
26
29
Wed, 07 Jun   04 AM
26
28
Wed, 07 Jun   05 AM
26
27
Wed, 07 Jun   06 AM
26
26
Wed, 07 Jun   07 AM
23
25
Wed, 07 Jun   08 AM
27
25
Wed, 07 Jun   09 AM
31
26
Wed, 07 Jun   10 AM
33
27
Wed, 07 Jun   11 AM
35
28
Wed, 07 Jun   12 PM
37
30
Wed, 07 Jun   01 PM
39
31
Wed, 07 Jun   02 PM
38
33
Wed, 07 Jun   03 PM
36
35
Wed, 07 Jun   04 PM
33
35
Wed, 07 Jun   05 PM
31
35
Wed, 07 Jun   06 PM
29
35
Wed, 07 Jun   07 PM
29
34
Wed, 07 Jun   08 PM
28
33
Wed, 07 Jun   09 PM
26
31
Wed, 07 Jun   10 PM
24
30
Wed, 07 Jun   11 PM
23
28
Thu, 08 Jun   12 AM
21
26
Thu, 08 Jun   01 AM
19
25
Thu, 08 Jun   02 AM
18
24
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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