Air Quality Forecast Guidance for Portland, OR

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 45.52 N, longitude: 122.68 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 10/01, 4Z)
36
30
*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
Sat, 30 Sep  09 AM
10
13
Sat, 30 Sep  10 AM
14
13
Sat, 30 Sep  11 AM
18
13
Sat, 30 Sep  12 PM
20
13
Sat, 30 Sep  01 PM
21
14
Sat, 30 Sep  02 PM
25
16
Sat, 30 Sep  03 PM
31
19
Sat, 30 Sep  04 PM
35
22
Sat, 30 Sep   05 PM
36
25
Sat, 30 Sep   06 PM
35
28
Sat, 30 Sep   07 PM
31
29
Sat, 30 Sep   08 PM
29
30
Sat, 30 Sep   09 PM
20
30
Sat, 30 Sep   10 PM
22
30
Sat, 30 Sep   11 PM
23
29
Sun, 01 Oct   12 AM
22
27
Sun, 01 Oct   01 AM
20
25
Sun, 01 Oct   02 AM
17
23
Sun, 01 Oct   03 AM
12
21
Sun, 01 Oct   04 AM
10
18
Sun, 01 Oct   05 AM
11
17
Sun, 01 Oct   06 AM
11
16
Sun, 01 Oct   07 AM
5
13
Sun, 01 Oct   08 AM
5
11
Sun, 01 Oct   09 AM
7
10
Sun, 01 Oct   10 AM
11
9
Sun, 01 Oct   11 AM
14
9
Sun, 01 Oct   12 PM
15
10
Sun, 01 Oct   01 PM
20
11
Sun, 01 Oct   02 PM
26
13
Sun, 01 Oct   03 PM
30
16
Sun, 01 Oct   04 PM
32
19
Sun, 01 Oct   05 PM
32
23
Sun, 01 Oct   06 PM
31
25
Sun, 01 Oct   07 PM
21
26
Sun, 01 Oct   08 PM
17
26
Sun, 01 Oct   09 PM
15
26
Sun, 01 Oct   10 PM
12
24
Sun, 01 Oct   11 PM
11
21
Mon, 02 Oct   12 AM
9
19
Mon, 02 Oct   01 AM
9
16
Mon, 02 Oct   02 AM
8
13
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Sat, 30 Sep  09 AM
0
0
Sat, 30 Sep  10 AM
0
0
Sat, 30 Sep  11 AM
0
0
Sat, 30 Sep  12 PM
0
0
Sat, 30 Sep  01 PM
0
0
Sat, 30 Sep  02 PM
0
0
Sat, 30 Sep  03 PM
0
0
Sat, 30 Sep  04 PM
0
0
Sat, 30 Sep  05 PM
0
0
Sat, 30 Sep  06 PM
0
0
Sat, 30 Sep  07 PM
0
0
Sat, 30 Sep  08 PM
0
0
Sat, 30 Sep  09 PM
0
0
Sat, 30 Sep  10 PM
0
0
Sat, 30 Sep  11 PM
0
0
Sun, 01 Oct  12 AM
0
0
Sun, 01 Oct  01 AM
0
0
Sun, 01 Oct  02 AM
0
0
Sun, 01 Oct  03 AM
0
0
Sun, 01 Oct  04 AM
0
0
Sun, 01 Oct  05 AM
0
0
Sun, 01 Oct  06 AM
0
0
Sun, 01 Oct  07 AM
0
0
Sun, 01 Oct  08 AM
0
0
Sun, 01 Oct  09 AM
0
0
Sun, 01 Oct  10 AM
0
0
Sun, 01 Oct  11 AM
0
0
Sun, 01 Oct  12 PM
0
0
Sun, 01 Oct  01 PM
0
0
Sun, 01 Oct  02 PM
0
0
Sun, 01 Oct  03 PM
0
0
Sun, 01 Oct  04 PM
0
0
Sun, 01 Oct  05 PM
0
0
Sun, 01 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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