Air Quality Forecast Guidance for Old Station, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 40.57 N, longitude: 121.35 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 09/29, 4Z)
44
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
Thu, 28 Sep  07 AM
32
31
Thu, 28 Sep  08 AM
34
31
Thu, 28 Sep  09 AM
30
31
Thu, 28 Sep  10 AM
34
31
Thu, 28 Sep  11 AM
38
32
Thu, 28 Sep  12 PM
41
33
Thu, 28 Sep  01 PM
43
35
Thu, 28 Sep  02 PM
44
37
Thu, 28 Sep  03 PM
42
38
Thu, 28 Sep  04 PM
40
39
Thu, 28 Sep   05 PM
37
40
Thu, 28 Sep   06 PM
44
41
Thu, 28 Sep   07 PM
41
41
Thu, 28 Sep   08 PM
34
41
Thu, 28 Sep   09 PM
32
39
Thu, 28 Sep   10 PM
28
37
Thu, 28 Sep   11 PM
29
36
Fri, 29 Sep   12 AM
30
34
Fri, 29 Sep   01 AM
30
34
Fri, 29 Sep   02 AM
29
32
Fri, 29 Sep   03 AM
26
30
Fri, 29 Sep   04 AM
26
29
Fri, 29 Sep   05 AM
30
28
Fri, 29 Sep   06 AM
30
29
Fri, 29 Sep   07 AM
29
29
Fri, 29 Sep   08 AM
31
29
Fri, 29 Sep   09 AM
23
28
Fri, 29 Sep   10 AM
33
28
Fri, 29 Sep   11 AM
36
30
Fri, 29 Sep   12 PM
38
31
Fri, 29 Sep   01 PM
42
33
Fri, 29 Sep   02 PM
43
34
Fri, 29 Sep   03 PM
43
36
Fri, 29 Sep   04 PM
42
37
Fri, 29 Sep   05 PM
44
40
Fri, 29 Sep   06 PM
48
42
Fri, 29 Sep   07 PM
46
43
Fri, 29 Sep   08 PM
39
43
Fri, 29 Sep   09 PM
32
42
Fri, 29 Sep   10 PM
25
40
Fri, 29 Sep   11 PM
22
37
Sat, 30 Sep   12 AM
18
34
Sat, 30 Sep   01 AM
21
31
Sat, 30 Sep   02 AM
15
27
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Thu, 28 Sep  05 AM
0
0
Thu, 28 Sep  06 AM
0
0
Thu, 28 Sep  07 AM
0
0
Thu, 28 Sep  08 AM
0
0
Thu, 28 Sep  09 AM
0
0
Thu, 28 Sep  10 AM
0
0
Thu, 28 Sep  11 AM
0
0
Thu, 28 Sep  12 PM
0
0
Thu, 28 Sep  01 PM
0
0
Thu, 28 Sep  02 PM
0
0
Thu, 28 Sep  03 PM
0
0
Thu, 28 Sep  04 PM
0
0
Thu, 28 Sep  05 PM
0
0
Thu, 28 Sep  06 PM
0
0
Thu, 28 Sep  07 PM
0
0
Thu, 28 Sep  08 PM
0
0
Thu, 28 Sep  09 PM
0
0
Thu, 28 Sep  10 PM
0
0
Thu, 28 Sep  11 PM
0
0
Fri, 29 Sep  12 AM
0
0
Fri, 29 Sep  01 AM
0
0
Fri, 29 Sep  02 AM
0
0
Fri, 29 Sep  03 AM
0
0
Fri, 29 Sep  04 AM
0
0
Fri, 29 Sep  05 AM
0
0
Fri, 29 Sep  06 AM
0
0
Fri, 29 Sep  07 AM
0
0
Fri, 29 Sep  08 AM
0
0
Fri, 29 Sep  09 AM
0
0
Fri, 29 Sep  10 AM
0
0
Fri, 29 Sep  11 AM
0
0
Fri, 29 Sep  12 PM
0
0
Fri, 29 Sep  01 PM
0
0
Fri, 29 Sep  02 PM
0
0
Fri, 29 Sep  03 PM
0
0
Fri, 29 Sep  04 PM
0
0
Fri, 29 Sep  05 PM
0
0
Fri, 29 Sep  06 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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