Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.78 N, longitude: 121.81 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 10/03, 4Z)
32
29
*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
Mon, 02 Oct  09 PM
24
25
Mon, 02 Oct  10 PM
25
25
Mon, 02 Oct  11 PM
29
25
Tue, 03 Oct  12 AM
28
26
Tue, 03 Oct  01 AM
30
26
Tue, 03 Oct  02 AM
29
27
Tue, 03 Oct  03 AM
31
28
Tue, 03 Oct  04 AM
32
29
Tue, 03 Oct  05 AM
30
30
Tue, 03 Oct  06 AM
29
30
Tue, 03 Oct  07 AM
27
30
Tue, 03 Oct  08 AM
25
29
Tue, 03 Oct  09 AM
24
28
Tue, 03 Oct  10 AM
26
28
Tue, 03 Oct  11 AM
24
27
Tue, 03 Oct  12 PM
25
26
Tue, 03 Oct  01 PM
26
26
Tue, 03 Oct  02 PM
27
26
Tue, 03 Oct  03 PM
28
26
Tue, 03 Oct  04 PM
30
26
Tue, 03 Oct   05 PM
32
27
Tue, 03 Oct   06 PM
35
28
Tue, 03 Oct   07 PM
36
30
Tue, 03 Oct   08 PM
32
31
Tue, 03 Oct   09 PM
31
31
Tue, 03 Oct   10 PM
31
32
Tue, 03 Oct   11 PM
31
32
Wed, 04 Oct   12 AM
30
32
Wed, 04 Oct   01 AM
30
32
Wed, 04 Oct   02 AM
29
31
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Mon, 02 Oct  09 PM
0
0
Mon, 02 Oct  10 PM
0
0
Mon, 02 Oct  11 PM
0
0
Tue, 03 Oct  12 AM
0
0
Tue, 03 Oct  01 AM
0
0
Tue, 03 Oct  02 AM
0
0
Tue, 03 Oct  03 AM
0
0
Tue, 03 Oct  04 AM
0
0
Tue, 03 Oct  05 AM
0
0
Tue, 03 Oct  06 AM
0
0
Tue, 03 Oct  07 AM
0
0
Tue, 03 Oct  08 AM
0
0
Tue, 03 Oct  09 AM
0
0
Tue, 03 Oct  10 AM
0
0
Tue, 03 Oct  11 AM
0
0
Tue, 03 Oct  12 PM
0
0
Tue, 03 Oct  01 PM
0
0
Tue, 03 Oct  02 PM
0
0
Tue, 03 Oct  03 PM
0
0
Tue, 03 Oct  04 PM
0
0
Tue, 03 Oct  05 PM
0
0
Tue, 03 Oct  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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