Air Quality Forecast Guidance for Londonderry, NH

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 42.85 N, longitude: 71.36 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 05/30, 4Z)
41
39
*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
Mon, 29 May  02 PM
39
34
Mon, 29 May  03 PM
40
36
Mon, 29 May  04 PM
41
38
Mon, 29 May  05 PM
39
39
Mon, 29 May  06 PM
37
39
Mon, 29 May  07 PM
37
39
Mon, 29 May   08 PM
33
38
Mon, 29 May   09 PM
28
37
Mon, 29 May   10 PM
24
35
Mon, 29 May   11 PM
23
33
Tue, 30 May   12 AM
21
30
Tue, 30 May   01 AM
15
27
Tue, 30 May   02 AM
13
24
Tue, 30 May   03 AM
9
21
Tue, 30 May   04 AM
7
18
Tue, 30 May   05 AM
5
15
Tue, 30 May   06 AM
3
12
Tue, 30 May   07 AM
11
11
Tue, 30 May   08 AM
23
11
Tue, 30 May   09 AM
28
12
Tue, 30 May   10 AM
33
15
Tue, 30 May   11 AM
36
18
Tue, 30 May   12 PM
42
23
Tue, 30 May   01 PM
47
28
Tue, 30 May   02 PM
49
34
Tue, 30 May   03 PM
52
39
Tue, 30 May   04 PM
53
42
Tue, 30 May   05 PM
50
45
Tue, 30 May   06 PM
44
47
Tue, 30 May   07 PM
38
47
Tue, 30 May   08 PM
32
46
Tue, 30 May   09 PM
28
43
Tue, 30 May   10 PM
24
40
Tue, 30 May   11 PM
22
36
Wed, 31 May   12 AM
21
32
Wed, 31 May   01 AM
14
28
Wed, 31 May   02 AM
12
24
Wed, 31 May   03 AM
8
20
Wed, 31 May   04 AM
7
17
Wed, 31 May   05 AM
5
14
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Mon, 29 May  02 PM
0
0
Mon, 29 May  03 PM
0
0
Mon, 29 May  04 PM
0
0
Mon, 29 May  05 PM
0
0
Mon, 29 May  06 PM
0
0
Mon, 29 May  07 PM
0
0
Mon, 29 May  08 PM
0
0
Mon, 29 May  09 PM
0
0
Mon, 29 May  10 PM
0
0
Mon, 29 May  11 PM
0
0
Tue, 30 May  12 AM
0
0
Tue, 30 May  01 AM
0
0
Tue, 30 May  02 AM
0
0
Tue, 30 May  03 AM
0
0
Tue, 30 May  04 AM
0
0
Tue, 30 May  05 AM
0
0
Tue, 30 May  06 AM
0
0
Tue, 30 May  07 AM
0
0
Tue, 30 May  08 AM
0
0
Tue, 30 May  09 AM
0
0
Tue, 30 May  10 AM
0
0
Tue, 30 May  11 AM
0
0
Tue, 30 May  12 PM
0
0
Tue, 30 May  01 PM
0
0
Tue, 30 May  02 PM
0
0
Tue, 30 May  03 PM
0
0
Tue, 30 May  04 PM
0
0
Tue, 30 May  05 PM
0
0
Tue, 30 May  06 PM
0
0
Tue, 30 May  07 PM
0
0
Tue, 30 May  08 PM
0
0
Tue, 30 May  09 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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