Air Quality Forecast Guidance for Thurmont, MD

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 39.62 N, longitude: 77.41 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 09/01, 4Z)
57
55
*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, 31 Aug  04 PM
54
47
Mon, 31 Aug  05 PM
57
52
Mon, 31 Aug  06 PM
56
54
Mon, 31 Aug  07 PM
52
55
Mon, 31 Aug   08 PM
47
54
Mon, 31 Aug   09 PM
44
52
Mon, 31 Aug   10 PM
40
50
Mon, 31 Aug   11 PM
38
48
Tue, 01 Sep   12 AM
36
46
Tue, 01 Sep   01 AM
34
43
Tue, 01 Sep   02 AM
30
40
Tue, 01 Sep   03 AM
26
37
Tue, 01 Sep   04 AM
23
34
Tue, 01 Sep   05 AM
20
31
Tue, 01 Sep   06 AM
18
28
Tue, 01 Sep   07 AM
18
26
Tue, 01 Sep   08 AM
20
24
Tue, 01 Sep   09 AM
26
23
Tue, 01 Sep   10 AM
44
24
Tue, 01 Sep   11 AM
57
28
Tue, 01 Sep   12 PM
60
33
Tue, 01 Sep   01 PM
62
38
Tue, 01 Sep   02 PM
64
44
Tue, 01 Sep   03 PM
66
50
Tue, 01 Sep   04 PM
68
56
Tue, 01 Sep   05 PM
69
61
Tue, 01 Sep   06 PM
68
64
Tue, 01 Sep   07 PM
61
65
Tue, 01 Sep   08 PM
54
64
Tue, 01 Sep   09 PM
48
62
Tue, 01 Sep   10 PM
42
60
Tue, 01 Sep   11 PM
37
56
Wed, 02 Sep   12 AM
32
51
Wed, 02 Sep   01 AM
28
46
Wed, 02 Sep   02 AM
26
41
Wed, 02 Sep   03 AM
23
36
Wed, 02 Sep   04 AM
22
32
Wed, 02 Sep   05 AM
20
29
Wed, 02 Sep   06 AM
20
26
Wed, 02 Sep   07 AM
21
24
Wed, 02 Sep   08 AM
21
23
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, 31 Aug  01 PM
0
0
Mon, 31 Aug  02 PM
0
0
Mon, 31 Aug  03 PM
0
0
Mon, 31 Aug  04 PM
0
0
Mon, 31 Aug  05 PM
0
0
Mon, 31 Aug  06 PM
0
0
Mon, 31 Aug  07 PM
0
0
Mon, 31 Aug  08 PM
0
0
Mon, 31 Aug  09 PM
0
0
Mon, 31 Aug  10 PM
0
0
Mon, 31 Aug  11 PM
0
0
Tue, 01 Sep  12 AM
0
0
Tue, 01 Sep  01 AM
0
0
Tue, 01 Sep  02 AM
0
0
Tue, 01 Sep  03 AM
0
0
Tue, 01 Sep  04 AM
0
0
Tue, 01 Sep  05 AM
0
0
Tue, 01 Sep  06 AM
0
0
Tue, 01 Sep  07 AM
0
0
Tue, 01 Sep  08 AM
0
0
Tue, 01 Sep  09 AM
0
0
Tue, 01 Sep  10 AM
0
0
Tue, 01 Sep  11 AM
0
0
Tue, 01 Sep  12 PM
0
0
Tue, 01 Sep  01 PM
0
0
Tue, 01 Sep  02 PM
0
0
Tue, 01 Sep  03 PM
0
0
Tue, 01 Sep  04 PM
0
0
Tue, 01 Sep  05 PM
0
0
Tue, 01 Sep  06 PM
0
0
Tue, 01 Sep  07 PM
0
0
Tue, 01 Sep  08 PM
0
0
Tue, 01 Sep  09 PM
0
0
Tue, 01 Sep  10 PM
0
0
Tue, 01 Sep  11 PM
0
0
Wed, 02 Sep  12 AM
0
0
Wed, 02 Sep  01 AM
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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