Air Quality Forecast Guidance for Frederick, MD

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 39.43 N, longitude: 77.42 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 09/29, 4Z)
35
29
*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)
6Z Model Run
8 Hour Average Ozone
Concentration (PPB)
6Z Model Run
Thu, 28 Sep  10 AM
12
9
Thu, 28 Sep  11 AM
22
10
Thu, 28 Sep  12 PM
34
14
Thu, 28 Sep  01 PM
35
17
Thu, 28 Sep  02 PM
31
19
Thu, 28 Sep  03 PM
26
21
Thu, 28 Sep  04 PM
28
24
Thu, 28 Sep  05 PM
29
27
Thu, 28 Sep  06 PM
26
29
Thu, 28 Sep  07 PM
21
29
Thu, 28 Sep   08 PM
16
26
Thu, 28 Sep   09 PM
16
24
Thu, 28 Sep   10 PM
20
23
Thu, 28 Sep   11 PM
19
22
Fri, 29 Sep   12 AM
19
21
Fri, 29 Sep   01 AM
13
19
Fri, 29 Sep   02 AM
11
17
Fri, 29 Sep   03 AM
10
15
Fri, 29 Sep   04 AM
6
14
Fri, 29 Sep   05 AM
5
13
Fri, 29 Sep   06 AM
4
11
Fri, 29 Sep   07 AM
5
9
Fri, 29 Sep   08 AM
6
8
Fri, 29 Sep   09 AM
2
6
Fri, 29 Sep   10 AM
7
6
Fri, 29 Sep   11 AM
15
6
Fri, 29 Sep   12 PM
20
8
Fri, 29 Sep   01 PM
21
10
Fri, 29 Sep   02 PM
21
12
Fri, 29 Sep   03 PM
22
14
Fri, 29 Sep   04 PM
22
16
Fri, 29 Sep   05 PM
21
19
Fri, 29 Sep   06 PM
20
20
Fri, 29 Sep   07 PM
18
21
Fri, 29 Sep   08 PM
18
20
Fri, 29 Sep   09 PM
22
21
Fri, 29 Sep   10 PM
25
21
Fri, 29 Sep   11 PM
26
22
Sat, 30 Sep   12 AM
25
22
Sat, 30 Sep   01 AM
22
22
Sat, 30 Sep   02 AM
19
22
Sat, 30 Sep   03 AM
21
22
Sat, 30 Sep   04 AM
22
23
Sat, 30 Sep   05 AM
20
22
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, 28 Sep  07 AM
0
0
Thu, 28 Sep  08 AM
0
0
Thu, 28 Sep  09 AM
0
0
Thu, 28 Sep  10 AM
0
0
Thu, 28 Sep  11 AM
0
0
Thu, 28 Sep  12 PM
0
0
Thu, 28 Sep  01 PM
0
0
Thu, 28 Sep  02 PM
0
0
Thu, 28 Sep  03 PM
0
0
Thu, 28 Sep  04 PM
0
0
Thu, 28 Sep  05 PM
0
0
Thu, 28 Sep  06 PM
0
0
Thu, 28 Sep  07 PM
0
0
Thu, 28 Sep  08 PM
0
0
Thu, 28 Sep  09 PM
0
0
Thu, 28 Sep  10 PM
0
0
Thu, 28 Sep  11 PM
0
0
Fri, 29 Sep  12 AM
0
0
Fri, 29 Sep  01 AM
0
0
Fri, 29 Sep  02 AM
0
0
Fri, 29 Sep  03 AM
0
0
Fri, 29 Sep  04 AM
0
0
Fri, 29 Sep  05 AM
0
0
Fri, 29 Sep  06 AM
0
0
Fri, 29 Sep  07 AM
0
0
Fri, 29 Sep  08 AM
0
0
Fri, 29 Sep  09 AM
0
0
Fri, 29 Sep  10 AM
0
0
Fri, 29 Sep  11 AM
0
0
Fri, 29 Sep  12 PM
0
0
Fri, 29 Sep  01 PM
0
0
Fri, 29 Sep  02 PM
0
0
Fri, 29 Sep  03 PM
0
0
Fri, 29 Sep  04 PM
0
0
Fri, 29 Sep  05 PM
0
0
Fri, 29 Sep  06 PM
0
0
Fri, 29 Sep  07 PM
0
0
Fri, 29 Sep  08 PM
0
0
Fri, 29 Sep  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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