Air Quality Forecast Guidance for Londontowne, MD

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.91 N, longitude: 76.55 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 01/28, 4Z)
36
33
*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, 27 Jan  11 PM
21
29
Tue, 28 Jan  12 AM
20
27
Tue, 28 Jan  01 AM
17
25
Tue, 28 Jan  02 AM
17
23
Tue, 28 Jan  03 AM
14
21
Tue, 28 Jan  04 AM
16
20
Tue, 28 Jan  05 AM
16
18
Tue, 28 Jan  06 AM
18
17
Tue, 28 Jan  07 AM
15
17
Tue, 28 Jan  08 AM
12
16
Tue, 28 Jan  09 AM
14
15
Tue, 28 Jan  10 AM
19
16
Tue, 28 Jan  11 AM
23
17
Tue, 28 Jan  12 PM
26
18
Tue, 28 Jan  01 PM
29
19
Tue, 28 Jan  02 PM
31
21
Tue, 28 Jan  03 PM
32
23
Tue, 28 Jan  04 PM
31
26
Tue, 28 Jan  05 PM
31
28
Tue, 28 Jan  06 PM
29
29
Tue, 28 Jan   07 PM
26
29
Tue, 28 Jan   08 PM
24
29
Tue, 28 Jan   09 PM
20
28
Tue, 28 Jan   10 PM
18
26
Tue, 28 Jan   11 PM
15
24
Wed, 29 Jan   12 AM
14
22
Wed, 29 Jan   01 AM
15
20
Wed, 29 Jan   02 AM
18
19
Wed, 29 Jan   03 AM
18
18
Wed, 29 Jan   04 AM
19
17
Wed, 29 Jan   05 AM
19
17
Wed, 29 Jan   06 AM
19
17
Wed, 29 Jan   07 AM
21
18
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, 27 Jan  11 PM
0
0
Tue, 28 Jan  12 AM
0
0
Tue, 28 Jan  01 AM
0
0
Tue, 28 Jan  02 AM
0
0
Tue, 28 Jan  03 AM
0
0
Tue, 28 Jan  04 AM
0
0
Tue, 28 Jan  05 AM
0
0
Tue, 28 Jan  06 AM
0
0
Tue, 28 Jan  07 AM
0
0
Tue, 28 Jan  08 AM
0
0
Tue, 28 Jan  09 AM
0
0
Tue, 28 Jan  10 AM
0
0
Tue, 28 Jan  11 AM
0
0
Tue, 28 Jan  12 PM
0
0
Tue, 28 Jan  01 PM
0
0
Tue, 28 Jan  02 PM
0
0
Tue, 28 Jan  03 PM
0
0
Tue, 28 Jan  04 PM
0
0
Tue, 28 Jan  05 PM
0
0
Tue, 28 Jan  06 PM
0
0
Tue, 28 Jan  07 PM
0
0
Tue, 28 Jan  08 PM
0
0
Tue, 28 Jan  09 PM
0
0
Tue, 28 Jan  10 PM
0
0
Tue, 28 Jan  11 PM
0
0
Wed, 29 Jan  12 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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