Air Quality Forecast Guidance for Salem, OR

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 44.94 N, longitude: 123.03 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 05/25, 4Z)
34
31
*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
Sun, 24 May  01 PM
32
24
Sun, 24 May  02 PM
34
26
Sun, 24 May  03 PM
33
28
Sun, 24 May  04 PM
31
29
Sun, 24 May   05 PM
30
30
Sun, 24 May   06 PM
29
30
Sun, 24 May   07 PM
28
30
Sun, 24 May   08 PM
24
30
Sun, 24 May   09 PM
21
29
Sun, 24 May   10 PM
21
27
Sun, 24 May   11 PM
22
26
Mon, 25 May   12 AM
21
24
Mon, 25 May   01 AM
21
23
Mon, 25 May   02 AM
21
22
Mon, 25 May   03 AM
21
21
Mon, 25 May   04 AM
20
21
Mon, 25 May   05 AM
20
21
Mon, 25 May   06 AM
20
21
Mon, 25 May   07 AM
23
21
Mon, 25 May   08 AM
26
22
Mon, 25 May   09 AM
27
22
Mon, 25 May   10 AM
27
23
Mon, 25 May   11 AM
29
24
Mon, 25 May   12 PM
30
25
Mon, 25 May   01 PM
31
27
Mon, 25 May   02 PM
31
28
Mon, 25 May   03 PM
32
29
Mon, 25 May   04 PM
31
30
Mon, 25 May   05 PM
30
30
Mon, 25 May   06 PM
29
30
Mon, 25 May   07 PM
28
30
Mon, 25 May   08 PM
24
30
Mon, 25 May   09 PM
20
28
Mon, 25 May   10 PM
20
27
Mon, 25 May   11 PM
22
26
Tue, 26 May   12 AM
23
25
Tue, 26 May   01 AM
22
24
Tue, 26 May   02 AM
21
23
Tue, 26 May   03 AM
21
22
Tue, 26 May   04 AM
20
21
Tue, 26 May   05 AM
19
21
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, 24 May  10 AM
0
0
Sun, 24 May  11 AM
0
0
Sun, 24 May  12 PM
0
0
Sun, 24 May  01 PM
0
0
Sun, 24 May  02 PM
0
0
Sun, 24 May  03 PM
0
0
Sun, 24 May  04 PM
0
0
Sun, 24 May  05 PM
0
0
Sun, 24 May  06 PM
0
0
Sun, 24 May  07 PM
0
0
Sun, 24 May  08 PM
0
0
Sun, 24 May  09 PM
0
0
Sun, 24 May  10 PM
0
0
Sun, 24 May  11 PM
0
0
Mon, 25 May  12 AM
0
0
Mon, 25 May  01 AM
0
0
Mon, 25 May  02 AM
0
0
Mon, 25 May  03 AM
0
0
Mon, 25 May  04 AM
0
0
Mon, 25 May  05 AM
0
0
Mon, 25 May  06 AM
0
0
Mon, 25 May  07 AM
0
0
Mon, 25 May  08 AM
0
0
Mon, 25 May  09 AM
0
0
Mon, 25 May  10 AM
0
0
Mon, 25 May  11 AM
0
0
Mon, 25 May  12 PM
0
0
Mon, 25 May  01 PM
0
0
Mon, 25 May  02 PM
0
0
Mon, 25 May  03 PM
0
0
Mon, 25 May  04 PM
0
0
Mon, 25 May  05 PM
0
0
Mon, 25 May  06 PM
0
0
Mon, 25 May  07 PM
0
0
Mon, 25 May  08 PM
0
0
Mon, 25 May  09 PM
0
0
Mon, 25 May  10 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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