Air Quality Forecast Guidance for Shenandoah, TX

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 30.18 N, longitude: 95.46 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 01/17, 4Z)
41
38
*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, 16 Jan  01 PM
37
33
Sun, 16 Jan  02 PM
39
34
Sun, 16 Jan  03 PM
40
35
Sun, 16 Jan  04 PM
41
36
Sun, 16 Jan  05 PM
40
37
Sun, 16 Jan   06 PM
37
38
Sun, 16 Jan   07 PM
31
38
Sun, 16 Jan   08 PM
27
37
Sun, 16 Jan   09 PM
26
35
Sun, 16 Jan   10 PM
25
33
Sun, 16 Jan   11 PM
25
32
Mon, 17 Jan   12 AM
25
30
Mon, 17 Jan   01 AM
24
28
Mon, 17 Jan   02 AM
25
26
Mon, 17 Jan   03 AM
24
25
Mon, 17 Jan   04 AM
23
25
Mon, 17 Jan   05 AM
22
24
Mon, 17 Jan   06 AM
19
23
Mon, 17 Jan   07 AM
16
22
Mon, 17 Jan   08 AM
12
20
Mon, 17 Jan   09 AM
14
19
Mon, 17 Jan   10 AM
23
19
Mon, 17 Jan   11 AM
29
20
Mon, 17 Jan   12 PM
32
21
Mon, 17 Jan   01 PM
33
22
Mon, 17 Jan   02 PM
34
24
Mon, 17 Jan   03 PM
34
26
Mon, 17 Jan   04 PM
33
29
Mon, 17 Jan   05 PM
32
31
Mon, 17 Jan   06 PM
23
31
Mon, 17 Jan   07 PM
15
29
Mon, 17 Jan   08 PM
9
26
Mon, 17 Jan   09 PM
2
23
Mon, 17 Jan   10 PM
2
19
Mon, 17 Jan   11 PM
10
16
Tue, 18 Jan   12 AM
17
14
Tue, 18 Jan   01 AM
20
12
Tue, 18 Jan   02 AM
20
12
Tue, 18 Jan   03 AM
20
12
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, 16 Jan  01 PM
0
0
Sun, 16 Jan  02 PM
0
0
Sun, 16 Jan  03 PM
0
0
Sun, 16 Jan  04 PM
0
0
Sun, 16 Jan  05 PM
0
0
Sun, 16 Jan  06 PM
0
0
Sun, 16 Jan  07 PM
0
0
Sun, 16 Jan  08 PM
0
0
Sun, 16 Jan  09 PM
0
0
Sun, 16 Jan  10 PM
0
0
Sun, 16 Jan  11 PM
0
0
Mon, 17 Jan  12 AM
0
0
Mon, 17 Jan  01 AM
0
0
Mon, 17 Jan  02 AM
0
0
Mon, 17 Jan  03 AM
0
0
Mon, 17 Jan  04 AM
0
0
Mon, 17 Jan  05 AM
0
0
Mon, 17 Jan  06 AM
0
0
Mon, 17 Jan  07 AM
0
0
Mon, 17 Jan  08 AM
0
0
Mon, 17 Jan  09 AM
0
0
Mon, 17 Jan  10 AM
0
0
Mon, 17 Jan  11 AM
0
0
Mon, 17 Jan  12 PM
0
0
Mon, 17 Jan  01 PM
0
0
Mon, 17 Jan  02 PM
0
0
Mon, 17 Jan  03 PM
0
0
Mon, 17 Jan  04 PM
0
0
Mon, 17 Jan  05 PM
0
0
Mon, 17 Jan  06 PM
0
0
Mon, 17 Jan  07 PM
0
0
Mon, 17 Jan  08 PM
0
0
Mon, 17 Jan  09 PM
0
0
Mon, 17 Jan  10 PM
0
0
Mon, 17 Jan  11 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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