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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 10/22, 4Z)
39
30
*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 Oct  05 PM
32
28
Tue, 21 Oct  06 PM
17
29
Tue, 21 Oct  07 PM
9
28
Tue, 21 Oct   08 PM
12
27
Tue, 21 Oct   09 PM
19
25
Tue, 21 Oct   10 PM
24
24
Tue, 21 Oct   11 PM
26
22
Wed, 22 Oct   12 AM
25
21
Wed, 22 Oct   01 AM
28
20
Wed, 22 Oct   02 AM
30
22
Wed, 22 Oct   03 AM
29
24
Wed, 22 Oct   04 AM
29
26
Wed, 22 Oct   05 AM
30
28
Wed, 22 Oct   06 AM
29
28
Wed, 22 Oct   07 AM
27
29
Wed, 22 Oct   08 AM
26
29
Wed, 22 Oct   09 AM
29
29
Wed, 22 Oct   10 AM
33
29
Wed, 22 Oct   11 AM
33
30
Wed, 22 Oct   12 PM
37
31
Wed, 22 Oct   01 PM
37
32
Wed, 22 Oct   02 PM
38
33
Wed, 22 Oct   03 PM
40
34
Wed, 22 Oct   04 PM
38
36
Wed, 22 Oct   05 PM
36
37
Wed, 22 Oct   06 PM
36
37
Wed, 22 Oct   07 PM
34
37
Wed, 22 Oct   08 PM
34
37
Wed, 22 Oct   09 PM
33
36
Wed, 22 Oct   10 PM
33
36
Wed, 22 Oct   11 PM
32
34
Thu, 23 Oct   12 AM
32
34
Thu, 23 Oct   01 AM
32
33
Thu, 23 Oct   02 AM
33
33
Thu, 23 Oct   03 AM
33
33
Thu, 23 Oct   04 AM
34
33
Thu, 23 Oct   05 AM
33
33
Thu, 23 Oct   06 AM
32
33
Thu, 23 Oct   07 AM
28
32
Thu, 23 Oct   08 AM
24
31
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 Oct  05 PM
0
0
Tue, 21 Oct  06 PM
0
0
Tue, 21 Oct  07 PM
0
0
Tue, 21 Oct  08 PM
0
0
Tue, 21 Oct  09 PM
0
0
Tue, 21 Oct  10 PM
0
0
Tue, 21 Oct  11 PM
0
0
Wed, 22 Oct  12 AM
0
0
Wed, 22 Oct  01 AM
0
0
Wed, 22 Oct  02 AM
0
0
Wed, 22 Oct  03 AM
0
0
Wed, 22 Oct  04 AM
0
0
Wed, 22 Oct  05 AM
0
0
Wed, 22 Oct  06 AM
0
0
Wed, 22 Oct  07 AM
0
0
Wed, 22 Oct  08 AM
0
0
Wed, 22 Oct  09 AM
0
0
Wed, 22 Oct  10 AM
0
0
Wed, 22 Oct  11 AM
0
0
Wed, 22 Oct  12 PM
0
0
Wed, 22 Oct  01 PM
0
0
Wed, 22 Oct  02 PM
0
0
Wed, 22 Oct  03 PM
0
0
Wed, 22 Oct  04 PM
0
0
Wed, 22 Oct  05 PM
0
0
Wed, 22 Oct  06 PM
0
0
Wed, 22 Oct  07 PM
0
0
Wed, 22 Oct  08 PM
0
0
Wed, 22 Oct  09 PM
0
0
Wed, 22 Oct  10 PM
0
0
Wed, 22 Oct  11 PM
0
0
Thu, 23 Oct  12 AM
0
0
Thu, 23 Oct  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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