Air Quality Forecast Guidance for City Of The Dalles, OR

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 45.63 N, longitude: 121.15 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 10/25, 4Z)
33
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)

12Z Model Run
8 Hour Average Ozone
Concentration (PPB)

12Z Model Run
Sat, 24 Oct  01 PM
26
26
Sat, 24 Oct  02 PM
28
27
Sat, 24 Oct  03 PM
31
28
Sat, 24 Oct  04 PM
32
28
Sat, 24 Oct   05 PM
33
29
Sat, 24 Oct   06 PM
31
30
Sat, 24 Oct   07 PM
28
30
Sat, 24 Oct   08 PM
26
29
Sat, 24 Oct   09 PM
25
29
Sat, 24 Oct   10 PM
23
29
Sat, 24 Oct   11 PM
23
28
Sun, 25 Oct   12 AM
23
26
Sun, 25 Oct   01 AM
23
25
Sun, 25 Oct   02 AM
24
24
Sun, 25 Oct   03 AM
23
24
Sun, 25 Oct   04 AM
23
23
Sun, 25 Oct   05 AM
22
23
Sun, 25 Oct   06 AM
21
23
Sun, 25 Oct   07 AM
20
22
Sun, 25 Oct   08 AM
18
22
Sun, 25 Oct   09 AM
19
21
Sun, 25 Oct   10 AM
25
21
Sun, 25 Oct   11 AM
29
22
Sun, 25 Oct   12 PM
31
23
Sun, 25 Oct   01 PM
32
24
Sun, 25 Oct   02 PM
33
26
Sun, 25 Oct   03 PM
34
28
Sun, 25 Oct   04 PM
35
30
Sun, 25 Oct   05 PM
34
32
Sun, 25 Oct   06 PM
30
32
Sun, 25 Oct   07 PM
26
32
Sun, 25 Oct   08 PM
24
31
Sun, 25 Oct   09 PM
23
30
Sun, 25 Oct   10 PM
23
29
Sun, 25 Oct   11 PM
23
27
Mon, 26 Oct   12 AM
23
26
Mon, 26 Oct   01 AM
23
24
Mon, 26 Oct   02 AM
23
23
Mon, 26 Oct   03 AM
23
23
Mon, 26 Oct   04 AM
23
23
Mon, 26 Oct   05 AM
23
23
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, 24 Oct  10 AM
30
6
Sat, 24 Oct  11 AM
28
7
Sat, 24 Oct  12 PM
15
8
Sat, 24 Oct  01 PM
5
7
Sat, 24 Oct  02 PM
8
6
Sat, 24 Oct  03 PM
6
5
Sat, 24 Oct  04 PM
3
5
Sat, 24 Oct  05 PM
2
5
Sat, 24 Oct  06 PM
4
5
Sat, 24 Oct  07 PM
4
5
Sat, 24 Oct  08 PM
0
7
Sat, 24 Oct  09 PM
4
10
Sat, 24 Oct  10 PM
2
5
Sat, 24 Oct  11 PM
15
5
Sun, 25 Oct  12 AM
10
3
Sun, 25 Oct  01 AM
11
2
Sun, 25 Oct  02 AM
11
2
Sun, 25 Oct  03 AM
7
3
Sun, 25 Oct  04 AM
11
17
Sun, 25 Oct  05 AM
15
17
Sun, 25 Oct  06 AM
41
5
Sun, 25 Oct  07 AM
34
5
Sun, 25 Oct  08 AM
9
2
Sun, 25 Oct  09 AM
5
1
Sun, 25 Oct  10 AM
2
1
Sun, 25 Oct  11 AM
2
1
Sun, 25 Oct  12 PM
2
1
Sun, 25 Oct  01 PM
0
1
Sun, 25 Oct  02 PM
3
1
Sun, 25 Oct  03 PM
0
0
Sun, 25 Oct  04 PM
1
0
Sun, 25 Oct  05 PM
1
0
Sun, 25 Oct  06 PM
1
1
Sun, 25 Oct  07 PM
1
0
Sun, 25 Oct  08 PM
1
1
Sun, 25 Oct  09 PM
0
1
Sun, 25 Oct  10 PM
0
1

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