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Air Quality Forecast Guidance for Ephrata, WA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 47.32 N, longitude: 119.55 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 09/18, 4Z)
54
53
*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
Wed, 17 Sep  07 AM
27
32
Wed, 17 Sep  08 AM
27
30
Wed, 17 Sep  09 AM
32
30
Wed, 17 Sep  10 AM
41
31
Wed, 17 Sep  11 AM
48
33
Wed, 17 Sep  12 PM
53
36
Wed, 17 Sep  01 PM
54
39
Wed, 17 Sep  02 PM
53
42
Wed, 17 Sep  03 PM
54
45
Wed, 17 Sep  04 PM
54
49
Wed, 17 Sep   05 PM
54
51
Wed, 17 Sep   06 PM
52
53
Wed, 17 Sep   07 PM
49
53
Wed, 17 Sep   08 PM
46
52
Wed, 17 Sep   09 PM
44
51
Wed, 17 Sep   10 PM
42
49
Wed, 17 Sep   11 PM
42
48
Thu, 18 Sep   12 AM
41
46
Thu, 18 Sep   01 AM
37
44
Thu, 18 Sep   02 AM
37
42
Thu, 18 Sep   03 AM
39
41
Thu, 18 Sep   04 AM
37
40
Thu, 18 Sep   05 AM
34
39
Thu, 18 Sep   06 AM
32
37
Thu, 18 Sep   07 AM
30
36
Thu, 18 Sep   08 AM
29
34
Thu, 18 Sep   09 AM
32
34
Thu, 18 Sep   10 AM
39
34
Thu, 18 Sep   11 AM
43
35
Thu, 18 Sep   12 PM
45
36
Thu, 18 Sep   01 PM
44
37
Thu, 18 Sep   02 PM
43
38
Thu, 18 Sep   03 PM
42
40
Thu, 18 Sep   04 PM
41
41
Thu, 18 Sep   05 PM
41
42
Thu, 18 Sep   06 PM
41
42
Thu, 18 Sep   07 PM
40
42
Thu, 18 Sep   08 PM
37
41
Thu, 18 Sep   09 PM
35
40
Thu, 18 Sep   10 PM
35
39
Thu, 18 Sep   11 PM
35
38
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Wed, 17 Sep  06 AM
16
6
Wed, 17 Sep  07 AM
16
4
Wed, 17 Sep  08 AM
4
6
Wed, 17 Sep  09 AM
0
6
Wed, 17 Sep  10 AM
0
10
Wed, 17 Sep  11 AM
1
6
Wed, 17 Sep  12 PM
3
4
Wed, 17 Sep  01 PM
1
3
Wed, 17 Sep  02 PM
1
3
Wed, 17 Sep  03 PM
4
3
Wed, 17 Sep  04 PM
3
3
Wed, 17 Sep  05 PM
4
3
Wed, 17 Sep  06 PM
10
3
Wed, 17 Sep  07 PM
16
4
Wed, 17 Sep  08 PM
0
4
Wed, 17 Sep  09 PM
3
4
Wed, 17 Sep  10 PM
6
4
Wed, 17 Sep  11 PM
6
4
Thu, 18 Sep  12 AM
10
6
Thu, 18 Sep  01 AM
16
6
Thu, 18 Sep  02 AM
16
3
Thu, 18 Sep  03 AM
16
3
Thu, 18 Sep  04 AM
40
4
Thu, 18 Sep  05 AM
63
6
Thu, 18 Sep  06 AM
100
6
Thu, 18 Sep  07 AM
158
6
Thu, 18 Sep  08 AM
100
6
Thu, 18 Sep  09 AM
63
6
Thu, 18 Sep  10 AM
40
6
Thu, 18 Sep  11 AM
16
4
Thu, 18 Sep  12 PM
6
3
Thu, 18 Sep  01 PM
3
1
Thu, 18 Sep  02 PM
0
0
Thu, 18 Sep  03 PM
0
0
Thu, 18 Sep  04 PM
0
0
Thu, 18 Sep  05 PM
0
0
Thu, 18 Sep  06 PM
0
0
Thu, 18 Sep  07 PM
0
0
Thu, 18 Sep  08 PM
0
0
Thu, 18 Sep  09 PM
0
0
Thu, 18 Sep  10 PM
0
0

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Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


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