Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 48.32 N, longitude: 121.06 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 04/06, 4Z)
39
38
*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)

6Z Model Run
8 Hour Average Ozone
Concentration (PPB)

6Z Model Run
Sun, 05 Apr  08 AM
21
24
Sun, 05 Apr  09 AM
26
24
Sun, 05 Apr  10 AM
32
24
Sun, 05 Apr  11 AM
33
25
Sun, 05 Apr  12 PM
35
27
Sun, 05 Apr  01 PM
36
28
Sun, 05 Apr  02 PM
38
30
Sun, 05 Apr  03 PM
38
32
Sun, 05 Apr  04 PM
38
34
Sun, 05 Apr   05 PM
38
36
Sun, 05 Apr   06 PM
39
37
Sun, 05 Apr   07 PM
39
38
Sun, 05 Apr   08 PM
37
38
Sun, 05 Apr   09 PM
34
38
Sun, 05 Apr   10 PM
30
37
Sun, 05 Apr   11 PM
31
36
Mon, 06 Apr   12 AM
31
35
Mon, 06 Apr   01 AM
30
34
Mon, 06 Apr   02 AM
32
33
Mon, 06 Apr   03 AM
32
32
Mon, 06 Apr   04 AM
33
32
Mon, 06 Apr   05 AM
34
32
Mon, 06 Apr   06 AM
34
32
Mon, 06 Apr   07 AM
34
33
Mon, 06 Apr   08 AM
34
33
Mon, 06 Apr   09 AM
36
34
Mon, 06 Apr   10 AM
37
34
Mon, 06 Apr   11 AM
39
35
Mon, 06 Apr   12 PM
40
36
Mon, 06 Apr   01 PM
40
37
Mon, 06 Apr   02 PM
40
38
Mon, 06 Apr   03 PM
41
38
Mon, 06 Apr   04 PM
41
39
Mon, 06 Apr   05 PM
42
40
Mon, 06 Apr   06 PM
44
41
Mon, 06 Apr   07 PM
44
41
Mon, 06 Apr   08 PM
43
42
Mon, 06 Apr   09 PM
43
42
Mon, 06 Apr   10 PM
39
42
Mon, 06 Apr   11 PM
39
42
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sun, 05 Apr  08 AM
0
0
Sun, 05 Apr  09 AM
0
0
Sun, 05 Apr  10 AM
0
0
Sun, 05 Apr  11 AM
0
0
Sun, 05 Apr  12 PM
0
0
Sun, 05 Apr  01 PM
0
0
Sun, 05 Apr  02 PM
0
0
Sun, 05 Apr  03 PM
0
0
Sun, 05 Apr  04 PM
0
0
Sun, 05 Apr  05 PM
0
0
Sun, 05 Apr  06 PM
0
0
Sun, 05 Apr  07 PM
0
0
Sun, 05 Apr  08 PM
0
0
Sun, 05 Apr  09 PM
0
0
Sun, 05 Apr  10 PM
0
0
Sun, 05 Apr  11 PM
0
0
Mon, 06 Apr  12 AM
0
0
Mon, 06 Apr  01 AM
0
0
Mon, 06 Apr  02 AM
0
0
Mon, 06 Apr  03 AM
0
0
Mon, 06 Apr  04 AM
0
0
Mon, 06 Apr  05 AM
0
0
Mon, 06 Apr  06 AM
0
0
Mon, 06 Apr  07 AM
0
0
Mon, 06 Apr  08 AM
0
0
Mon, 06 Apr  09 AM
0
0
Mon, 06 Apr  10 AM
0
0
Mon, 06 Apr  11 AM
0
0
Mon, 06 Apr  12 PM
0
0
Mon, 06 Apr  01 PM
0
0
Mon, 06 Apr  02 PM
0
0
Mon, 06 Apr  03 PM
0
0
Mon, 06 Apr  04 PM
0
0
Mon, 06 Apr  05 PM
0
0
Mon, 06 Apr  06 PM
0
0
Mon, 06 Apr  07 PM
0
0
Mon, 06 Apr  08 PM
0
0
Mon, 06 Apr  09 PM
0
0
Mon, 06 Apr  10 PM
0
0

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


    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities