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Air Quality Forecast Guidance for Portland, TX

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 27.80 N, longitude: 97.40 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 02/20, 4Z)
55
53
*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
Tue, 19 Feb  05 PM
55
52
Tue, 19 Feb   06 PM
55
53
Tue, 19 Feb   07 PM
52
53
Tue, 19 Feb   08 PM
47
53
Tue, 19 Feb   09 PM
46
52
Tue, 19 Feb   10 PM
47
51
Tue, 19 Feb   11 PM
46
50
Wed, 20 Feb   12 AM
46
49
Wed, 20 Feb   01 AM
47
48
Wed, 20 Feb   02 AM
46
47
Wed, 20 Feb   03 AM
44
46
Wed, 20 Feb   04 AM
38
45
Wed, 20 Feb   05 AM
33
43
Wed, 20 Feb   06 AM
35
42
Wed, 20 Feb   07 AM
35
41
Wed, 20 Feb   08 AM
36
39
Wed, 20 Feb   09 AM
35
38
Wed, 20 Feb   10 AM
36
36
Wed, 20 Feb   11 AM
36
36
Wed, 20 Feb   12 PM
36
35
Wed, 20 Feb   01 PM
36
36
Wed, 20 Feb   02 PM
35
36
Wed, 20 Feb   03 PM
34
36
Wed, 20 Feb   04 PM
34
35
Wed, 20 Feb   05 PM
33
35
Wed, 20 Feb   06 PM
32
34
Wed, 20 Feb   07 PM
29
34
Wed, 20 Feb   08 PM
28
32
Wed, 20 Feb   09 PM
27
32
Wed, 20 Feb   10 PM
28
31
Wed, 20 Feb   11 PM
30
30
Thu, 21 Feb   12 AM
32
30
Thu, 21 Feb   01 AM
33
30
Thu, 21 Feb   02 AM
33
30
Thu, 21 Feb   03 AM
32
30
Thu, 21 Feb   04 AM
31
31
Thu, 21 Feb   05 AM
30
31
Thu, 21 Feb   06 AM
28
31
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 Feb  05 PM
0
0
Tue, 19 Feb  06 PM
0
0
Tue, 19 Feb  07 PM
0
0
Tue, 19 Feb  08 PM
0
0
Tue, 19 Feb  09 PM
1
0
Tue, 19 Feb  10 PM
0
0
Tue, 19 Feb  11 PM
0
0
Wed, 20 Feb  12 AM
0
0
Wed, 20 Feb  01 AM
1
0
Wed, 20 Feb  02 AM
0
0
Wed, 20 Feb  03 AM
0
0
Wed, 20 Feb  04 AM
1
0
Wed, 20 Feb  05 AM
0
0
Wed, 20 Feb  06 AM
0
0
Wed, 20 Feb  07 AM
0
0
Wed, 20 Feb  08 AM
0
0
Wed, 20 Feb  09 AM
0
0
Wed, 20 Feb  10 AM
0
0
Wed, 20 Feb  11 AM
0
0
Wed, 20 Feb  12 PM
0
0
Wed, 20 Feb  01 PM
0
0
Wed, 20 Feb  02 PM
0
0
Wed, 20 Feb  03 PM
0
0
Wed, 20 Feb  04 PM
0
0
Wed, 20 Feb  05 PM
0
0
Wed, 20 Feb  06 PM
0
0
Wed, 20 Feb  07 PM
0
0
Wed, 20 Feb  08 PM
0
0
Wed, 20 Feb  09 PM
0
0
Wed, 20 Feb  10 PM
0
0
Wed, 20 Feb  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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