Air Quality Forecast Guidance for Harwich, MA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 41.70 N, longitude: 70.08 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 06/30, 4Z)
54
50
*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
Wed, 29 Jun  07 PM
43
44
Wed, 29 Jun   08 PM
45
45
Wed, 29 Jun   09 PM
50
46
Wed, 29 Jun   10 PM
53
47
Wed, 29 Jun   11 PM
54
48
Thu, 30 Jun   12 AM
54
49
Thu, 30 Jun   01 AM
51
49
Thu, 30 Jun   02 AM
46
50
Thu, 30 Jun   03 AM
43
50
Thu, 30 Jun   04 AM
41
49
Thu, 30 Jun   05 AM
36
47
Thu, 30 Jun   06 AM
33
45
Thu, 30 Jun   07 AM
30
42
Thu, 30 Jun   08 AM
34
39
Thu, 30 Jun   09 AM
38
38
Thu, 30 Jun   10 AM
41
37
Thu, 30 Jun   11 AM
41
37
Thu, 30 Jun   12 PM
43
37
Thu, 30 Jun   01 PM
48
38
Thu, 30 Jun   02 PM
50
41
Thu, 30 Jun   03 PM
48
43
Thu, 30 Jun   04 PM
47
45
Thu, 30 Jun   05 PM
44
45
Thu, 30 Jun   06 PM
40
45
Thu, 30 Jun   07 PM
40
45
Thu, 30 Jun   08 PM
46
45
Thu, 30 Jun   09 PM
57
46
Thu, 30 Jun   10 PM
58
47
Thu, 30 Jun   11 PM
53
48
Fri, 01 Jul   12 AM
47
48
Fri, 01 Jul   01 AM
50
49
Fri, 01 Jul   02 AM
56
51
Fri, 01 Jul   03 AM
55
53
Fri, 01 Jul   04 AM
53
54
Fri, 01 Jul   05 AM
51
53
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Wed, 29 Jun  07 PM
0
0
Wed, 29 Jun  08 PM
0
0
Wed, 29 Jun  09 PM
0
0
Wed, 29 Jun  10 PM
0
0
Wed, 29 Jun  11 PM
0
0
Thu, 30 Jun  12 AM
0
0
Thu, 30 Jun  01 AM
0
0
Thu, 30 Jun  02 AM
0
0
Thu, 30 Jun  03 AM
0
0
Thu, 30 Jun  04 AM
0
0
Thu, 30 Jun  05 AM
0
0
Thu, 30 Jun  06 AM
0
0
Thu, 30 Jun  07 AM
0
0
Thu, 30 Jun  08 AM
0
0
Thu, 30 Jun  09 AM
0
0
Thu, 30 Jun  10 AM
0
0
Thu, 30 Jun  11 AM
0
0
Thu, 30 Jun  12 PM
0
0
Thu, 30 Jun  01 PM
0
0
Thu, 30 Jun  02 PM
0
0
Thu, 30 Jun  03 PM
0
0
Thu, 30 Jun  04 PM
0
0
Thu, 30 Jun  05 PM
0
0
Thu, 30 Jun  06 PM
0
0
Thu, 30 Jun  07 PM
0
0
Thu, 30 Jun  08 PM
0
0
Thu, 30 Jun  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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