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 07/23, 4Z)
52
47
*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
Tue, 22 Jul  11 AM
31
22
Tue, 22 Jul  12 PM
37
24
Tue, 22 Jul  01 PM
44
27
Tue, 22 Jul  02 PM
50
31
Tue, 22 Jul  03 PM
52
35
Tue, 22 Jul  04 PM
52
40
Tue, 22 Jul  05 PM
49
43
Tue, 22 Jul  06 PM
45
45
Tue, 22 Jul  07 PM
42
47
Tue, 22 Jul   08 PM
38
47
Tue, 22 Jul   09 PM
29
45
Tue, 22 Jul   10 PM
20
41
Tue, 22 Jul   11 PM
18
37
Wed, 23 Jul   12 AM
20
33
Wed, 23 Jul   01 AM
23
30
Wed, 23 Jul   02 AM
23
27
Wed, 23 Jul   03 AM
23
24
Wed, 23 Jul   04 AM
23
22
Wed, 23 Jul   05 AM
21
22
Wed, 23 Jul   06 AM
16
21
Wed, 23 Jul   07 AM
12
20
Wed, 23 Jul   08 AM
15
20
Wed, 23 Jul   09 AM
23
20
Wed, 23 Jul   10 AM
31
20
Wed, 23 Jul   11 AM
39
22
Wed, 23 Jul   12 PM
50
26
Wed, 23 Jul   01 PM
60
31
Wed, 23 Jul   02 PM
65
37
Wed, 23 Jul   03 PM
67
44
Wed, 23 Jul   04 PM
68
50
Wed, 23 Jul   05 PM
65
56
Wed, 23 Jul   06 PM
56
59
Wed, 23 Jul   07 PM
47
60
Wed, 23 Jul   08 PM
38
58
Wed, 23 Jul   09 PM
26
54
Wed, 23 Jul   10 PM
18
48
Wed, 23 Jul   11 PM
20
42
Thu, 24 Jul   12 AM
25
37
Thu, 24 Jul   01 AM
31
33
Thu, 24 Jul   02 AM
34
30
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, 22 Jul  11 AM
0
0
Tue, 22 Jul  12 PM
0
0
Tue, 22 Jul  01 PM
0
0
Tue, 22 Jul  02 PM
0
0
Tue, 22 Jul  03 PM
0
0
Tue, 22 Jul  04 PM
0
0
Tue, 22 Jul  05 PM
0
0
Tue, 22 Jul  06 PM
0
0
Tue, 22 Jul  07 PM
0
0
Tue, 22 Jul  08 PM
0
0
Tue, 22 Jul  09 PM
0
0
Tue, 22 Jul  10 PM
0
0
Tue, 22 Jul  11 PM
0
0
Wed, 23 Jul  12 AM
0
0
Wed, 23 Jul  01 AM
0
0
Wed, 23 Jul  02 AM
0
0
Wed, 23 Jul  03 AM
0
0
Wed, 23 Jul  04 AM
0
0
Wed, 23 Jul  05 AM
0
0
Wed, 23 Jul  06 AM
0
0
Wed, 23 Jul  07 AM
0
0
Wed, 23 Jul  08 AM
0
0
Wed, 23 Jul  09 AM
0
0
Wed, 23 Jul  10 AM
0
0
Wed, 23 Jul  11 AM
0
0
Wed, 23 Jul  12 PM
0
0
Wed, 23 Jul  01 PM
0
0
Wed, 23 Jul  02 PM
0
0
Wed, 23 Jul  03 PM
0
0
Wed, 23 Jul  04 PM
0
0
Wed, 23 Jul  05 PM
0
0
Wed, 23 Jul  06 PM
0
0
Wed, 23 Jul  07 PM
0
0
Wed, 23 Jul  08 PM
0
0
Wed, 23 Jul  09 PM
0
0
Wed, 23 Jul  10 PM
0
0
Wed, 23 Jul  11 PM
0
0
Thu, 24 Jul  12 AM
0
0
Thu, 24 Jul  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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