Air Quality Forecast Guidance for Altadena, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 34.29 N, longitude: 118.15 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 10/02, 4Z)
50
46
*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
Sun, 01 Oct  11 AM
39
36
Sun, 01 Oct  12 PM
41
36
Sun, 01 Oct  01 PM
42
37
Sun, 01 Oct  02 PM
43
38
Sun, 01 Oct  03 PM
46
40
Sun, 01 Oct  04 PM
49
42
Sun, 01 Oct   05 PM
50
43
Sun, 01 Oct   06 PM
51
45
Sun, 01 Oct   07 PM
48
46
Sun, 01 Oct   08 PM
43
46
Sun, 01 Oct   09 PM
39
46
Sun, 01 Oct   10 PM
34
45
Sun, 01 Oct   11 PM
32
43
Mon, 02 Oct   12 AM
29
41
Mon, 02 Oct   01 AM
28
38
Mon, 02 Oct   02 AM
28
35
Mon, 02 Oct   03 AM
27
33
Mon, 02 Oct   04 AM
27
31
Mon, 02 Oct   05 AM
26
29
Mon, 02 Oct   06 AM
27
28
Mon, 02 Oct   07 AM
28
28
Mon, 02 Oct   08 AM
30
28
Mon, 02 Oct   09 AM
34
29
Mon, 02 Oct   10 AM
40
30
Mon, 02 Oct   11 AM
45
32
Mon, 02 Oct   12 PM
48
35
Mon, 02 Oct   01 PM
49
38
Mon, 02 Oct   02 PM
51
41
Mon, 02 Oct   03 PM
54
44
Mon, 02 Oct   04 PM
56
47
Mon, 02 Oct   05 PM
55
50
Mon, 02 Oct   06 PM
55
52
Mon, 02 Oct   07 PM
48
52
Mon, 02 Oct   08 PM
42
51
Mon, 02 Oct   09 PM
37
50
Mon, 02 Oct   10 PM
33
47
Mon, 02 Oct   11 PM
29
44
Tue, 03 Oct   12 AM
28
41
Tue, 03 Oct   01 AM
28
38
Tue, 03 Oct   02 AM
31
35
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Sun, 01 Oct  11 AM
0
0
Sun, 01 Oct  12 PM
0
0
Sun, 01 Oct  01 PM
0
0
Sun, 01 Oct  02 PM
0
0
Sun, 01 Oct  03 PM
0
0
Sun, 01 Oct  04 PM
0
0
Sun, 01 Oct  05 PM
0
0
Sun, 01 Oct  06 PM
0
0
Sun, 01 Oct  07 PM
0
0
Sun, 01 Oct  08 PM
0
0
Sun, 01 Oct  09 PM
0
0
Sun, 01 Oct  10 PM
0
0
Sun, 01 Oct  11 PM
0
0
Mon, 02 Oct  12 AM
0
0
Mon, 02 Oct  01 AM
0
0
Mon, 02 Oct  02 AM
0
0
Mon, 02 Oct  03 AM
0
0
Mon, 02 Oct  04 AM
0
0
Mon, 02 Oct  05 AM
0
0
Mon, 02 Oct  06 AM
0
0
Mon, 02 Oct  07 AM
0
0
Mon, 02 Oct  08 AM
0
0
Mon, 02 Oct  09 AM
0
0
Mon, 02 Oct  10 AM
0
0
Mon, 02 Oct  11 AM
0
0
Mon, 02 Oct  12 PM
0
0
Mon, 02 Oct  01 PM
0
0
Mon, 02 Oct  02 PM
0
0
Mon, 02 Oct  03 PM
0
0
Mon, 02 Oct  04 PM
0
0
Mon, 02 Oct  05 PM
0
0
Mon, 02 Oct  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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