Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.76 N, longitude: 121.67 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 07/08, 4Z)
44
37
*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
Thu, 07 Jul  10 AM
31
37
Thu, 07 Jul  11 AM
28
36
Thu, 07 Jul  12 PM
27
35
Thu, 07 Jul  01 PM
26
34
Thu, 07 Jul  02 PM
26
32
Thu, 07 Jul  03 PM
26
30
Thu, 07 Jul  04 PM
26
28
Thu, 07 Jul   05 PM
27
27
Thu, 07 Jul   06 PM
29
27
Thu, 07 Jul   07 PM
31
27
Thu, 07 Jul   08 PM
33
28
Thu, 07 Jul   09 PM
33
29
Thu, 07 Jul   10 PM
32
30
Thu, 07 Jul   11 PM
31
30
Fri, 08 Jul   12 AM
31
31
Fri, 08 Jul   01 AM
31
32
Fri, 08 Jul   02 AM
30
32
Fri, 08 Jul   03 AM
30
32
Fri, 08 Jul   04 AM
29
31
Fri, 08 Jul   05 AM
28
30
Fri, 08 Jul   06 AM
29
30
Fri, 08 Jul   07 AM
29
30
Fri, 08 Jul   08 AM
30
29
Fri, 08 Jul   09 AM
28
29
Fri, 08 Jul   10 AM
27
29
Fri, 08 Jul   11 AM
26
28
Fri, 08 Jul   12 PM
25
28
Fri, 08 Jul   01 PM
24
27
Fri, 08 Jul   02 PM
24
26
Fri, 08 Jul   03 PM
24
26
Fri, 08 Jul   04 PM
24
25
Fri, 08 Jul   05 PM
28
25
Fri, 08 Jul   06 PM
35
26
Fri, 08 Jul   07 PM
40
28
Fri, 08 Jul   08 PM
38
29
Fri, 08 Jul   09 PM
37
31
Fri, 08 Jul   10 PM
36
33
Fri, 08 Jul   11 PM
36
34
Sat, 09 Jul   12 AM
36
36
Sat, 09 Jul   01 AM
36
37
Sat, 09 Jul   02 AM
35
37
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Thu, 07 Jul  10 AM
0
0
Thu, 07 Jul  11 AM
0
0
Thu, 07 Jul  12 PM
0
0
Thu, 07 Jul  01 PM
0
0
Thu, 07 Jul  02 PM
0
0
Thu, 07 Jul  03 PM
0
0
Thu, 07 Jul  04 PM
0
0
Thu, 07 Jul  05 PM
0
0
Thu, 07 Jul  06 PM
0
0
Thu, 07 Jul  07 PM
0
0
Thu, 07 Jul  08 PM
0
0
Thu, 07 Jul  09 PM
0
0
Thu, 07 Jul  10 PM
0
0
Thu, 07 Jul  11 PM
0
0
Fri, 08 Jul  12 AM
0
0
Fri, 08 Jul  01 AM
0
0
Fri, 08 Jul  02 AM
0
0
Fri, 08 Jul  03 AM
0
0
Fri, 08 Jul  04 AM
0
0
Fri, 08 Jul  05 AM
0
0
Fri, 08 Jul  06 AM
0
0
Fri, 08 Jul  07 AM
0
0
Fri, 08 Jul  08 AM
0
0
Fri, 08 Jul  09 AM
0
0
Fri, 08 Jul  10 AM
0
0
Fri, 08 Jul  11 AM
0
0
Fri, 08 Jul  12 PM
0
0
Fri, 08 Jul  01 PM
0
0
Fri, 08 Jul  02 PM
0
0
Fri, 08 Jul  03 PM
0
0
Fri, 08 Jul  04 PM
0
0
Fri, 08 Jul  05 PM
0
0
Fri, 08 Jul  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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