Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 46.78 N, longitude: 122.00 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)
30
25
*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
Thu, 07 Jul  09 AM
27
25
Thu, 07 Jul  10 AM
25
25
Thu, 07 Jul  11 AM
24
26
Thu, 07 Jul  12 PM
22
26
Thu, 07 Jul  01 PM
21
25
Thu, 07 Jul  02 PM
21
25
Thu, 07 Jul  03 PM
21
24
Thu, 07 Jul  04 PM
21
23
Thu, 07 Jul   05 PM
22
22
Thu, 07 Jul   06 PM
22
22
Thu, 07 Jul   07 PM
23
22
Thu, 07 Jul   08 PM
22
22
Thu, 07 Jul   09 PM
20
21
Thu, 07 Jul   10 PM
16
21
Thu, 07 Jul   11 PM
17
20
Fri, 08 Jul   12 AM
17
20
Fri, 08 Jul   01 AM
18
19
Fri, 08 Jul   02 AM
18
19
Fri, 08 Jul   03 AM
20
18
Fri, 08 Jul   04 AM
20
18
Fri, 08 Jul   05 AM
21
18
Fri, 08 Jul   06 AM
26
20
Fri, 08 Jul   07 AM
22
20
Fri, 08 Jul   08 AM
24
21
Fri, 08 Jul   09 AM
23
22
Fri, 08 Jul   10 AM
22
22
Fri, 08 Jul   11 AM
23
23
Fri, 08 Jul   12 PM
21
23
Fri, 08 Jul   01 PM
21
23
Fri, 08 Jul   02 PM
22
22
Fri, 08 Jul   03 PM
22
22
Fri, 08 Jul   04 PM
23
22
Fri, 08 Jul   05 PM
25
22
Fri, 08 Jul   06 PM
27
23
Fri, 08 Jul   07 PM
26
23
Fri, 08 Jul   08 PM
22
23
Fri, 08 Jul   09 PM
16
23
Fri, 08 Jul   10 PM
13
22
Fri, 08 Jul   11 PM
15
21
Sat, 09 Jul   12 AM
15
20
Sat, 09 Jul   01 AM
17
19
Sat, 09 Jul   02 AM
18
18
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  09 AM
0
0
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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