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Air Quality Forecast Guidance for Catholic University, DC

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.93 N, longitude: 77.02 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 05/21, 4Z)
50
45
*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
Tue, 21 May  12 AM
23
27
Tue, 21 May  01 AM
24
25
Tue, 21 May  02 AM
25
23
Tue, 21 May  03 AM
26
22
Tue, 21 May  04 AM
26
22
Tue, 21 May  05 AM
26
23
Tue, 21 May  06 AM
23
24
Tue, 21 May  07 AM
22
24
Tue, 21 May  08 AM
29
25
Tue, 21 May  09 AM
32
26
Tue, 21 May  10 AM
35
28
Tue, 21 May  11 AM
39
29
Tue, 21 May  12 PM
47
32
Tue, 21 May  01 PM
55
35
Tue, 21 May  02 PM
59
40
Tue, 21 May  03 PM
60
44
Tue, 21 May  04 PM
62
49
Tue, 21 May  05 PM
64
53
Tue, 21 May  06 PM
63
56
Tue, 21 May  07 PM
58
59
Tue, 21 May   08 PM
43
58
Tue, 21 May   09 PM
24
54
Tue, 21 May   10 PM
18
49
Tue, 21 May   11 PM
18
44
Wed, 22 May   12 AM
19
38
Wed, 22 May   01 AM
22
33
Wed, 22 May   02 AM
25
28
Wed, 22 May   03 AM
26
24
Wed, 22 May   04 AM
26
22
Wed, 22 May   05 AM
23
22
Wed, 22 May   06 AM
17
22
Wed, 22 May   07 AM
11
21
Wed, 22 May   08 AM
17
21
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Tue, 21 May  12 AM
0
0
Tue, 21 May  01 AM
0
0
Tue, 21 May  02 AM
0
0
Tue, 21 May  03 AM
0
0
Tue, 21 May  04 AM
0
0
Tue, 21 May  05 AM
0
0
Tue, 21 May  06 AM
0
0
Tue, 21 May  07 AM
0
0
Tue, 21 May  08 AM
0
0
Tue, 21 May  09 AM
0
0
Tue, 21 May  10 AM
0
0
Tue, 21 May  11 AM
0
0
Tue, 21 May  12 PM
0
0
Tue, 21 May  01 PM
0
0
Tue, 21 May  02 PM
0
0
Tue, 21 May  03 PM
0
0
Tue, 21 May  04 PM
0
0
Tue, 21 May  05 PM
0
0
Tue, 21 May  06 PM
0
0
Tue, 21 May  07 PM
0
0
Tue, 21 May  08 PM
0
0
Tue, 21 May  09 PM
0
0
Tue, 21 May  10 PM
0
0
Tue, 21 May  11 PM
0
0
Wed, 22 May  12 AM
0
0
Wed, 22 May  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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