Air Quality Forecast Guidance for Portland, TX

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 27.91 N, longitude: 97.32 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 02/26, 4Z)
33
31
*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
Thu, 25 Feb  09 PM
27
30
Thu, 25 Feb  10 PM
28
30
Thu, 25 Feb  11 PM
25
29
Fri, 26 Feb  12 AM
25
28
Fri, 26 Feb  01 AM
24
28
Fri, 26 Feb  02 AM
22
26
Fri, 26 Feb  03 AM
21
25
Fri, 26 Feb  04 AM
19
24
Fri, 26 Feb  05 AM
13
22
Fri, 26 Feb  06 AM
14
20
Fri, 26 Feb  07 AM
16
19
Fri, 26 Feb  08 AM
22
19
Fri, 26 Feb  09 AM
29
20
Fri, 26 Feb  10 AM
29
20
Fri, 26 Feb  11 AM
26
21
Fri, 26 Feb  12 PM
22
21
Fri, 26 Feb  01 PM
20
22
Fri, 26 Feb  02 PM
21
23
Fri, 26 Feb  03 PM
23
24
Fri, 26 Feb  04 PM
24
24
Fri, 26 Feb  05 PM
27
24
Fri, 26 Feb   06 PM
29
24
Fri, 26 Feb   07 PM
31
25
Fri, 26 Feb   08 PM
34
26
Fri, 26 Feb   09 PM
30
27
Fri, 26 Feb   10 PM
30
28
Fri, 26 Feb   11 PM
21
28
Sat, 27 Feb   12 AM
24
28
Sat, 27 Feb   01 AM
22
27
Sat, 27 Feb   02 AM
16
26
Sat, 27 Feb   03 AM
18
24
Sat, 27 Feb   04 AM
15
22
Sat, 27 Feb   05 AM
12
20
Sat, 27 Feb   06 AM
13
17
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Thu, 25 Feb  09 PM
0
1
Thu, 25 Feb  10 PM
0
0
Thu, 25 Feb  11 PM
0
0
Fri, 26 Feb  12 AM
0
0
Fri, 26 Feb  01 AM
0
0
Fri, 26 Feb  02 AM
0
0
Fri, 26 Feb  03 AM
0
0
Fri, 26 Feb  04 AM
0
0
Fri, 26 Feb  05 AM
0
0
Fri, 26 Feb  06 AM
0
0
Fri, 26 Feb  07 AM
0
0
Fri, 26 Feb  08 AM
0
0
Fri, 26 Feb  09 AM
0
0
Fri, 26 Feb  10 AM
0
0
Fri, 26 Feb  11 AM
0
0
Fri, 26 Feb  12 PM
0
0
Fri, 26 Feb  01 PM
0
0
Fri, 26 Feb  02 PM
0
0
Fri, 26 Feb  03 PM
0
0
Fri, 26 Feb  04 PM
0
0
Fri, 26 Feb  05 PM
0
0
Fri, 26 Feb  06 PM
0
0
Fri, 26 Feb  07 PM
0
0
Fri, 26 Feb  08 PM
0
0
Fri, 26 Feb  09 PM
0
0
Fri, 26 Feb  10 PM
0
0
Fri, 26 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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