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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 07/29, 4Z)
63
58
*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
Mon, 28 Jul  07 AM
16
21
Mon, 28 Jul  08 AM
20
20
Mon, 28 Jul  09 AM
32
21
Mon, 28 Jul  10 AM
40
24
Mon, 28 Jul  11 AM
51
27
Mon, 28 Jul  12 PM
60
32
Mon, 28 Jul  01 PM
63
37
Mon, 28 Jul  02 PM
61
43
Mon, 28 Jul  03 PM
59
48
Mon, 28 Jul  04 PM
58
53
Mon, 28 Jul   05 PM
56
56
Mon, 28 Jul   06 PM
54
58
Mon, 28 Jul   07 PM
51
58
Mon, 28 Jul   08 PM
42
56
Mon, 28 Jul   09 PM
31
51
Mon, 28 Jul   10 PM
24
47
Mon, 28 Jul   11 PM
20
42
Tue, 29 Jul   12 AM
19
37
Tue, 29 Jul   01 AM
20
32
Tue, 29 Jul   02 AM
21
28
Tue, 29 Jul   03 AM
21
25
Tue, 29 Jul   04 AM
22
22
Tue, 29 Jul   05 AM
21
21
Tue, 29 Jul   06 AM
19
20
Tue, 29 Jul   07 AM
15
20
Tue, 29 Jul   08 AM
18
20
Tue, 29 Jul   09 AM
26
20
Tue, 29 Jul   10 AM
31
22
Tue, 29 Jul   11 AM
36
24
Tue, 29 Jul   12 PM
42
26
Tue, 29 Jul   01 PM
43
29
Tue, 29 Jul   02 PM
42
32
Tue, 29 Jul   03 PM
41
35
Tue, 29 Jul   04 PM
40
38
Tue, 29 Jul   05 PM
39
39
Tue, 29 Jul   06 PM
38
40
Tue, 29 Jul   07 PM
36
40
Tue, 29 Jul   08 PM
32
39
Tue, 29 Jul   09 PM
25
37
Tue, 29 Jul   10 PM
20
34
Tue, 29 Jul   11 PM
19
31
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, 28 Jul  05 AM
0
0
Mon, 28 Jul  06 AM
0
0
Mon, 28 Jul  07 AM
0
0
Mon, 28 Jul  08 AM
0
0
Mon, 28 Jul  09 AM
1
0
Mon, 28 Jul  10 AM
1
0
Mon, 28 Jul  11 AM
0
0
Mon, 28 Jul  12 PM
0
0
Mon, 28 Jul  01 PM
0
0
Mon, 28 Jul  02 PM
0
0
Mon, 28 Jul  03 PM
0
0
Mon, 28 Jul  04 PM
0
0
Mon, 28 Jul  05 PM
0
0
Mon, 28 Jul  06 PM
0
0
Mon, 28 Jul  07 PM
1
0
Mon, 28 Jul  08 PM
0
0
Mon, 28 Jul  09 PM
0
0
Mon, 28 Jul  10 PM
0
0
Mon, 28 Jul  11 PM
0
0
Tue, 29 Jul  12 AM
0
0
Tue, 29 Jul  01 AM
0
0
Tue, 29 Jul  02 AM
0
0
Tue, 29 Jul  03 AM
0
0
Tue, 29 Jul  04 AM
0
0
Tue, 29 Jul  05 AM
0
0
Tue, 29 Jul  06 AM
0
0
Tue, 29 Jul  07 AM
0
0
Tue, 29 Jul  08 AM
0
0
Tue, 29 Jul  09 AM
0
0
Tue, 29 Jul  10 AM
0
0
Tue, 29 Jul  11 AM
0
0
Tue, 29 Jul  12 PM
0
0
Tue, 29 Jul  01 PM
0
0
Tue, 29 Jul  02 PM
0
0
Tue, 29 Jul  03 PM
0
0
Tue, 29 Jul  04 PM
0
0
Tue, 29 Jul  05 PM
0
0
Tue, 29 Jul  06 PM
0
0
Tue, 29 Jul  07 PM
0
0
Tue, 29 Jul  08 PM
0
0
Tue, 29 Jul  09 PM
0
0
Tue, 29 Jul  10 PM
0
0

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Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
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