Air Quality Forecast Guidance for Troy, AL

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 31.80 N, longitude: 85.97 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 05/28, 4Z)
51
49
*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, 28 May  05 AM
15
20
Sun, 28 May  06 AM
14
19
Sun, 28 May  07 AM
13
18
Sun, 28 May  08 AM
22
18
Sun, 28 May  09 AM
30
19
Sun, 28 May  10 AM
37
21
Sun, 28 May  11 AM
42
24
Sun, 28 May  12 PM
46
27
Sun, 28 May  01 PM
50
32
Sun, 28 May  02 PM
53
37
Sun, 28 May  03 PM
52
41
Sun, 28 May  04 PM
48
45
Sun, 28 May  05 PM
40
46
Sun, 28 May  06 PM
41
46
Sun, 28 May   07 PM
44
47
Sun, 28 May   08 PM
43
46
Sun, 28 May   09 PM
41
45
Sun, 28 May   10 PM
33
43
Sun, 28 May   11 PM
28
40
Mon, 29 May   12 AM
24
37
Mon, 29 May   01 AM
23
35
Mon, 29 May   02 AM
24
33
Mon, 29 May   03 AM
20
30
Mon, 29 May   04 AM
18
27
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, 28 May  05 AM
0
0
Sun, 28 May  06 AM
0
0
Sun, 28 May  07 AM
0
0
Sun, 28 May  08 AM
0
0
Sun, 28 May  09 AM
0
0
Sun, 28 May  10 AM
0
0
Sun, 28 May  11 AM
0
0
Sun, 28 May  12 PM
0
0
Sun, 28 May  01 PM
0
0
Sun, 28 May  02 PM
0
0
Sun, 28 May  03 PM
0
0
Sun, 28 May  04 PM
0
0
Sun, 28 May  05 PM
0
0
Sun, 28 May  06 PM
0
0
Sun, 28 May  07 PM
0
0
Sun, 28 May  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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