Air Quality Forecast Guidance for San Marcos, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 33.05 N, longitude: 117.13 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 08/17, 4Z)
53
47
*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, 16 Aug  07 AM
4
13
Tue, 16 Aug  08 AM
9
12
Tue, 16 Aug  09 AM
18
12
Tue, 16 Aug  10 AM
30
14
Tue, 16 Aug  11 AM
42
18
Tue, 16 Aug  12 PM
51
22
Tue, 16 Aug  01 PM
53
27
Tue, 16 Aug  02 PM
47
32
Tue, 16 Aug  03 PM
47
37
Tue, 16 Aug  04 PM
47
42
Tue, 16 Aug   05 PM
46
46
Tue, 16 Aug   06 PM
43
47
Tue, 16 Aug   07 PM
38
47
Tue, 16 Aug   08 PM
33
44
Tue, 16 Aug   09 PM
28
41
Tue, 16 Aug   10 PM
24
38
Tue, 16 Aug   11 PM
20
35
Wed, 17 Aug   12 AM
18
31
Wed, 17 Aug   01 AM
18
28
Wed, 17 Aug   02 AM
17
24
Wed, 17 Aug   03 AM
15
21
Wed, 17 Aug   04 AM
21
20
Wed, 17 Aug   05 AM
14
18
Wed, 17 Aug   06 AM
11
17
Wed, 17 Aug   07 AM
8
15
Wed, 17 Aug   08 AM
12
15
Wed, 17 Aug   09 AM
20
15
Wed, 17 Aug   10 AM
30
16
Wed, 17 Aug   11 AM
42
20
Wed, 17 Aug   12 PM
50
23
Wed, 17 Aug   01 PM
50
28
Wed, 17 Aug   02 PM
43
32
Wed, 17 Aug   03 PM
42
36
Wed, 17 Aug   04 PM
42
40
Wed, 17 Aug   05 PM
41
43
Wed, 17 Aug   06 PM
39
44
Wed, 17 Aug   07 PM
36
43
Wed, 17 Aug   08 PM
32
41
Wed, 17 Aug   09 PM
27
38
Wed, 17 Aug   10 PM
22
35
Wed, 17 Aug   11 PM
19
32
Thu, 18 Aug   12 AM
17
29
Thu, 18 Aug   01 AM
16
26
Thu, 18 Aug   02 AM
15
23
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, 16 Aug  05 AM
0
0
Tue, 16 Aug  06 AM
0
0
Tue, 16 Aug  07 AM
0
0
Tue, 16 Aug  08 AM
0
0
Tue, 16 Aug  09 AM
0
0
Tue, 16 Aug  10 AM
0
0
Tue, 16 Aug  11 AM
0
0
Tue, 16 Aug  12 PM
0
0
Tue, 16 Aug  01 PM
0
0
Tue, 16 Aug  02 PM
0
0
Tue, 16 Aug  03 PM
0
0
Tue, 16 Aug  04 PM
0
0
Tue, 16 Aug  05 PM
0
0
Tue, 16 Aug  06 PM
0
0
Tue, 16 Aug  07 PM
0
0
Tue, 16 Aug  08 PM
0
0
Tue, 16 Aug  09 PM
0
0
Tue, 16 Aug  10 PM
0
0
Tue, 16 Aug  11 PM
0
0
Wed, 17 Aug  12 AM
0
0
Wed, 17 Aug  01 AM
0
0
Wed, 17 Aug  02 AM
0
0
Wed, 17 Aug  03 AM
0
0
Wed, 17 Aug  04 AM
0
0
Wed, 17 Aug  05 AM
0
0
Wed, 17 Aug  06 AM
0
0
Wed, 17 Aug  07 AM
0
0
Wed, 17 Aug  08 AM
0
0
Wed, 17 Aug  09 AM
0
0
Wed, 17 Aug  10 AM
0
0
Wed, 17 Aug  11 AM
0
0
Wed, 17 Aug  12 PM
0
0
Wed, 17 Aug  01 PM
0
0
Wed, 17 Aug  02 PM
0
0
Wed, 17 Aug  03 PM
0
0
Wed, 17 Aug  04 PM
0
0
Wed, 17 Aug  05 PM
0
0
Wed, 17 Aug  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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