Air Quality Forecast Guidance for Castaic Lake, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 34.68 N, longitude: 118.58 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 03/20, 4Z)
50
48
*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
Tue, 19 Mar  07 AM
29
32
Tue, 19 Mar  08 AM
30
32
Tue, 19 Mar  09 AM
36
32
Tue, 19 Mar  10 AM
41
32
Tue, 19 Mar  11 AM
46
34
Tue, 19 Mar  12 PM
48
36
Tue, 19 Mar  01 PM
48
39
Tue, 19 Mar  02 PM
48
41
Tue, 19 Mar  03 PM
48
43
Tue, 19 Mar  04 PM
48
45
Tue, 19 Mar   05 PM
48
47
Tue, 19 Mar   06 PM
50
48
Tue, 19 Mar   07 PM
50
48
Tue, 19 Mar   08 PM
46
48
Tue, 19 Mar   09 PM
43
48
Tue, 19 Mar   10 PM
38
46
Tue, 19 Mar   11 PM
35
45
Wed, 20 Mar   12 AM
34
43
Wed, 20 Mar   01 AM
37
42
Wed, 20 Mar   02 AM
37
40
Wed, 20 Mar   03 AM
36
38
Wed, 20 Mar   04 AM
35
37
Wed, 20 Mar   05 AM
33
36
Wed, 20 Mar   06 AM
31
35
Wed, 20 Mar   07 AM
29
34
Wed, 20 Mar   08 AM
31
34
Wed, 20 Mar   09 AM
43
34
Wed, 20 Mar   10 AM
47
36
Wed, 20 Mar   11 AM
49
37
Wed, 20 Mar   12 PM
50
39
Wed, 20 Mar   01 PM
50
41
Wed, 20 Mar   02 PM
50
44
Wed, 20 Mar   03 PM
49
46
Wed, 20 Mar   04 PM
50
49
Wed, 20 Mar   05 PM
52
50
Wed, 20 Mar   06 PM
54
51
Wed, 20 Mar   07 PM
54
51
Wed, 20 Mar   08 PM
47
51
Wed, 20 Mar   09 PM
42
50
Wed, 20 Mar   10 PM
38
48
Wed, 20 Mar   11 PM
37
47
Thu, 21 Mar   12 AM
39
45
Thu, 21 Mar   01 AM
38
44
Thu, 21 Mar   02 AM
36
41
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Tue, 19 Mar  04 AM
0
0
Tue, 19 Mar  05 AM
0
0
Tue, 19 Mar  06 AM
0
0
Tue, 19 Mar  07 AM
0
0
Tue, 19 Mar  08 AM
0
0
Tue, 19 Mar  09 AM
0
0
Tue, 19 Mar  10 AM
0
0
Tue, 19 Mar  11 AM
0
0
Tue, 19 Mar  12 PM
0
0
Tue, 19 Mar  01 PM
0
0
Tue, 19 Mar  02 PM
0
0
Tue, 19 Mar  03 PM
0
0
Tue, 19 Mar  04 PM
0
0
Tue, 19 Mar  05 PM
0
0
Tue, 19 Mar  06 PM
0
0
Tue, 19 Mar  07 PM
0
0
Tue, 19 Mar  08 PM
0
0
Tue, 19 Mar  09 PM
0
0
Tue, 19 Mar  10 PM
0
0
Tue, 19 Mar  11 PM
0
0
Wed, 20 Mar  12 AM
0
0
Wed, 20 Mar  01 AM
0
0
Wed, 20 Mar  02 AM
0
0
Wed, 20 Mar  03 AM
0
0
Wed, 20 Mar  04 AM
0
0
Wed, 20 Mar  05 AM
0
0
Wed, 20 Mar  06 AM
0
0
Wed, 20 Mar  07 AM
0
0
Wed, 20 Mar  08 AM
0
0
Wed, 20 Mar  09 AM
0
0
Wed, 20 Mar  10 AM
0
0
Wed, 20 Mar  11 AM
0
0
Wed, 20 Mar  12 PM
0
0
Wed, 20 Mar  01 PM
0
0
Wed, 20 Mar  02 PM
0
0
Wed, 20 Mar  03 PM
0
0
Wed, 20 Mar  04 PM
0
0
Wed, 20 Mar  05 PM
0
0
Wed, 20 Mar  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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