Air Quality Forecast Guidance for Seattle, WA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 47.58 N, longitude: 122.40 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)
18
14
*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  08 PM
13
14
Mon, 02 Oct  09 PM
13
13
Mon, 02 Oct  10 PM
7
13
Mon, 02 Oct  11 PM
6
12
Tue, 03 Oct  12 AM
6
11
Tue, 03 Oct  01 AM
0
10
Tue, 03 Oct  02 AM
0
8
Tue, 03 Oct  03 AM
1
6
Tue, 03 Oct  04 AM
4
5
Tue, 03 Oct  05 AM
0
3
Tue, 03 Oct  06 AM
0
2
Tue, 03 Oct  07 AM
6
2
Tue, 03 Oct  08 AM
4
2
Tue, 03 Oct  09 AM
6
3
Tue, 03 Oct  10 AM
6
3
Tue, 03 Oct  11 AM
8
4
Tue, 03 Oct  12 PM
12
5
Tue, 03 Oct  01 PM
15
7
Tue, 03 Oct  02 PM
16
9
Tue, 03 Oct  03 PM
16
10
Tue, 03 Oct  04 PM
15
12
Tue, 03 Oct   05 PM
17
13
Tue, 03 Oct   06 PM
16
14
Tue, 03 Oct   07 PM
14
15
Tue, 03 Oct   08 PM
20
16
Tue, 03 Oct   09 PM
21
17
Tue, 03 Oct   10 PM
12
17
Tue, 03 Oct   11 PM
7
15
Wed, 04 Oct   12 AM
8
15
Wed, 04 Oct   01 AM
4
13
Wed, 04 Oct   02 AM
4
11
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  08 PM
0
0
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

    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