Air Quality Forecast Guidance for Castaic Lake, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 34.69 N, longitude: 118.56 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 05/30, 4Z)
47
45
*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
Mon, 29 May  11 AM
35
32
Mon, 29 May  12 PM
37
32
Mon, 29 May  01 PM
41
33
Mon, 29 May  02 PM
44
35
Mon, 29 May  03 PM
47
37
Mon, 29 May  04 PM
47
39
Mon, 29 May   05 PM
46
41
Mon, 29 May   06 PM
45
43
Mon, 29 May   07 PM
45
44
Mon, 29 May   08 PM
44
45
Mon, 29 May   09 PM
42
45
Mon, 29 May   10 PM
39
44
Mon, 29 May   11 PM
35
43
Tue, 30 May   12 AM
33
41
Tue, 30 May   01 AM
30
39
Tue, 30 May   02 AM
33
38
Tue, 30 May   03 AM
34
36
Tue, 30 May   04 AM
34
35
Tue, 30 May   05 AM
35
34
Tue, 30 May   06 AM
34
34
Tue, 30 May   07 AM
34
33
Tue, 30 May   08 AM
34
34
Tue, 30 May   09 AM
34
34
Tue, 30 May   10 AM
36
34
Tue, 30 May   11 AM
38
35
Tue, 30 May   12 PM
39
35
Tue, 30 May   01 PM
40
36
Tue, 30 May   02 PM
42
37
Tue, 30 May   03 PM
44
38
Tue, 30 May   04 PM
46
40
Tue, 30 May   05 PM
49
42
Tue, 30 May   06 PM
50
43
Tue, 30 May   07 PM
50
45
Tue, 30 May   08 PM
47
46
Tue, 30 May   09 PM
41
46
Tue, 30 May   10 PM
36
45
Tue, 30 May   11 PM
34
44
Wed, 31 May   12 AM
35
43
Wed, 31 May   01 AM
31
41
Wed, 31 May   02 AM
31
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
Mon, 29 May  11 AM
0
0
Mon, 29 May  12 PM
0
0
Mon, 29 May  01 PM
0
0
Mon, 29 May  02 PM
0
0
Mon, 29 May  03 PM
0
0
Mon, 29 May  04 PM
0
0
Mon, 29 May  05 PM
0
0
Mon, 29 May  06 PM
0
0
Mon, 29 May  07 PM
0
0
Mon, 29 May  08 PM
0
0
Mon, 29 May  09 PM
0
0
Mon, 29 May  10 PM
0
0
Mon, 29 May  11 PM
0
0
Tue, 30 May  12 AM
0
0
Tue, 30 May  01 AM
0
0
Tue, 30 May  02 AM
0
0
Tue, 30 May  03 AM
0
0
Tue, 30 May  04 AM
0
0
Tue, 30 May  05 AM
0
0
Tue, 30 May  06 AM
0
0
Tue, 30 May  07 AM
0
0
Tue, 30 May  08 AM
0
0
Tue, 30 May  09 AM
0
0
Tue, 30 May  10 AM
0
0
Tue, 30 May  11 AM
0
0
Tue, 30 May  12 PM
0
0
Tue, 30 May  01 PM
0
0
Tue, 30 May  02 PM
0
0
Tue, 30 May  03 PM
0
0
Tue, 30 May  04 PM
0
0
Tue, 30 May  05 PM
0
0
Tue, 30 May  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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