Air Quality Forecast Guidance for Multnomah Falls, OR

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 45.58 N, longitude: 122.13 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 08/01, 4Z)
54
41
*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, 31 Jul  07 AM
32
36
Sat, 31 Jul  08 AM
28
34
Sat, 31 Jul  09 AM
25
32
Sat, 31 Jul  10 AM
25
30
Sat, 31 Jul  11 AM
25
29
Sat, 31 Jul  12 PM
26
28
Sat, 31 Jul  01 PM
30
27
Sat, 31 Jul  02 PM
31
28
Sat, 31 Jul  03 PM
29
27
Sat, 31 Jul  04 PM
28
27
Sat, 31 Jul   05 PM
32
28
Sat, 31 Jul   06 PM
34
29
Sat, 31 Jul   07 PM
30
30
Sat, 31 Jul   08 PM
27
30
Sat, 31 Jul   09 PM
26
30
Sat, 31 Jul   10 PM
21
28
Sat, 31 Jul   11 PM
20
27
Sun, 01 Aug   12 AM
18
26
Sun, 01 Aug   01 AM
16
24
Sun, 01 Aug   02 AM
16
22
Sun, 01 Aug   03 AM
17
20
Sun, 01 Aug   04 AM
19
19
Sun, 01 Aug   05 AM
23
19
Sun, 01 Aug   06 AM
24
19
Sun, 01 Aug   07 AM
24
20
Sun, 01 Aug   08 AM
28
21
Sun, 01 Aug   09 AM
34
23
Sun, 01 Aug   10 AM
38
26
Sun, 01 Aug   11 AM
44
29
Sun, 01 Aug   12 PM
49
33
Sun, 01 Aug   01 PM
54
37
Sun, 01 Aug   02 PM
58
41
Sun, 01 Aug   03 PM
61
46
Sun, 01 Aug   04 PM
63
50
Sun, 01 Aug   05 PM
64
54
Sun, 01 Aug   06 PM
60
57
Sun, 01 Aug   07 PM
50
57
Sun, 01 Aug   08 PM
43
57
Sun, 01 Aug   09 PM
37
55
Sun, 01 Aug   10 PM
33
51
Sun, 01 Aug   11 PM
30
47
Mon, 02 Aug   12 AM
28
43
Mon, 02 Aug   01 AM
26
38
Mon, 02 Aug   02 AM
25
34
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, 31 Jul  07 AM
0
12
Sat, 31 Jul  08 AM
0
11
Sat, 31 Jul  09 AM
0
13
Sat, 31 Jul  10 AM
0
17
Sat, 31 Jul  11 AM
0
21
Sat, 31 Jul  12 PM
0
21
Sat, 31 Jul  01 PM
0
23
Sat, 31 Jul  02 PM
0
29
Sat, 31 Jul  03 PM
0
34
Sat, 31 Jul  04 PM
0
38
Sat, 31 Jul  05 PM
0
59
Sat, 31 Jul  06 PM
0
60
Sat, 31 Jul  07 PM
0
49
Sat, 31 Jul  08 PM
0
41
Sat, 31 Jul  09 PM
0
39
Sat, 31 Jul  10 PM
0
37
Sat, 31 Jul  11 PM
0
37
Sun, 01 Aug  12 AM
0
41
Sun, 01 Aug  01 AM
0
46
Sun, 01 Aug  02 AM
0
54
Sun, 01 Aug  03 AM
0
62
Sun, 01 Aug  04 AM
0
61
Sun, 01 Aug  05 AM
0
70
Sun, 01 Aug  06 AM
0
63
Sun, 01 Aug  07 AM
18
75
Sun, 01 Aug  08 AM
0
98
Sun, 01 Aug  09 AM
5
94
Sun, 01 Aug  10 AM
13
84
Sun, 01 Aug  11 AM
0
88
Sun, 01 Aug  12 PM
0
92
Sun, 01 Aug  01 PM
0
85
Sun, 01 Aug  02 PM
0
54
Sun, 01 Aug  03 PM
0
31
Sun, 01 Aug  04 PM
0
22
Sun, 01 Aug  05 PM
0
11
Sun, 01 Aug  06 PM
0
6
Sun, 01 Aug  07 PM
0
18
Sun, 01 Aug  08 PM
0
28
Sun, 01 Aug  09 PM
0
32
Sun, 01 Aug  10 PM
0
39

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