Air Quality Forecast Guidance for San Marcos, TX

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 29.89 N, longitude: 97.93 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 06/10, 4Z)
69
65
*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
Fri, 09 Jun  01 PM
58
31
Fri, 09 Jun  02 PM
64
36
Fri, 09 Jun  03 PM
67
43
Fri, 09 Jun  04 PM
68
49
Fri, 09 Jun  05 PM
68
55
Fri, 09 Jun  06 PM
68
60
Fri, 09 Jun   07 PM
69
64
Fri, 09 Jun   08 PM
59
65
Fri, 09 Jun   09 PM
41
63
Fri, 09 Jun   10 PM
35
59
Fri, 09 Jun   11 PM
35
55
Sat, 10 Jun   12 AM
29
51
Sat, 10 Jun   01 AM
25
45
Sat, 10 Jun   02 AM
23
39
Sat, 10 Jun   03 AM
21
33
Sat, 10 Jun   04 AM
18
28
Sat, 10 Jun   05 AM
16
25
Sat, 10 Jun   06 AM
14
22
Sat, 10 Jun   07 AM
13
20
Sat, 10 Jun   08 AM
14
18
Sat, 10 Jun   09 AM
19
17
Sat, 10 Jun   10 AM
31
18
Sat, 10 Jun   11 AM
41
21
Sat, 10 Jun   12 PM
47
25
Sat, 10 Jun   01 PM
52
29
Sat, 10 Jun   02 PM
54
34
Sat, 10 Jun   03 PM
55
39
Sat, 10 Jun   04 PM
55
44
Sat, 10 Jun   05 PM
54
49
Sat, 10 Jun   06 PM
54
51
Sat, 10 Jun   07 PM
54
53
Sat, 10 Jun   08 PM
50
53
Sat, 10 Jun   09 PM
41
52
Sat, 10 Jun   10 PM
34
50
Sat, 10 Jun   11 PM
33
47
Sun, 11 Jun   12 AM
33
44
Sun, 11 Jun   01 AM
31
41
Sun, 11 Jun   02 AM
29
38
Sun, 11 Jun   03 AM
28
35
Sun, 11 Jun   04 AM
26
32
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Fri, 09 Jun  01 PM
0
0
Fri, 09 Jun  02 PM
0
0
Fri, 09 Jun  03 PM
0
0
Fri, 09 Jun  04 PM
0
0
Fri, 09 Jun  05 PM
0
0
Fri, 09 Jun  06 PM
0
0
Fri, 09 Jun  07 PM
0
0
Fri, 09 Jun  08 PM
0
0
Fri, 09 Jun  09 PM
0
0
Fri, 09 Jun  10 PM
0
0
Fri, 09 Jun  11 PM
0
0
Sat, 10 Jun  12 AM
0
0
Sat, 10 Jun  01 AM
0
0
Sat, 10 Jun  02 AM
0
0
Sat, 10 Jun  03 AM
0
0
Sat, 10 Jun  04 AM
0
0
Sat, 10 Jun  05 AM
0
0
Sat, 10 Jun  06 AM
0
0
Sat, 10 Jun  07 AM
0
0
Sat, 10 Jun  08 AM
0
0
Sat, 10 Jun  09 AM
0
0
Sat, 10 Jun  10 AM
0
0
Sat, 10 Jun  11 AM
0
0
Sat, 10 Jun  12 PM
0
0
Sat, 10 Jun  01 PM
0
0
Sat, 10 Jun  02 PM
0
0
Sat, 10 Jun  03 PM
0
0
Sat, 10 Jun  04 PM
0
0
Sat, 10 Jun  05 PM
0
0
Sat, 10 Jun  06 PM
0
0
Sat, 10 Jun  07 PM
0
0
Sat, 10 Jun  08 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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