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 04/26, 4Z)
39
35
*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, 25 Apr  04 PM
28
26
Tue, 25 Apr  05 PM
28
27
Tue, 25 Apr  06 PM
28
27
Tue, 25 Apr  07 PM
30
28
Tue, 25 Apr   08 PM
32
29
Tue, 25 Apr   09 PM
33
30
Tue, 25 Apr   10 PM
32
30
Tue, 25 Apr   11 PM
33
31
Wed, 26 Apr   12 AM
33
31
Wed, 26 Apr   01 AM
33
32
Wed, 26 Apr   02 AM
33
32
Wed, 26 Apr   03 AM
35
33
Wed, 26 Apr   04 AM
37
34
Wed, 26 Apr   05 AM
37
34
Wed, 26 Apr   06 AM
34
34
Wed, 26 Apr   07 AM
28
34
Wed, 26 Apr   08 AM
20
32
Wed, 26 Apr   09 AM
18
30
Wed, 26 Apr   10 AM
19
28
Wed, 26 Apr   11 AM
19
26
Wed, 26 Apr   12 PM
20
24
Wed, 26 Apr   01 PM
19
22
Wed, 26 Apr   02 PM
18
20
Wed, 26 Apr   03 PM
23
20
Wed, 26 Apr   04 PM
31
21
Wed, 26 Apr   05 PM
33
23
Wed, 26 Apr   06 PM
33
24
Wed, 26 Apr   07 PM
29
26
Wed, 26 Apr   08 PM
21
26
Wed, 26 Apr   09 PM
16
25
Wed, 26 Apr   10 PM
10
24
Wed, 26 Apr   11 PM
16
24
Thu, 27 Apr   12 AM
25
23
Thu, 27 Apr   01 AM
29
22
Thu, 27 Apr   02 AM
30
22
Thu, 27 Apr   03 AM
29
22
Thu, 27 Apr   04 AM
30
23
Thu, 27 Apr   05 AM
28
24
Thu, 27 Apr   06 AM
22
26
Thu, 27 Apr   07 AM
13
25
Thu, 27 Apr   08 AM
8
23
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, 25 Apr  04 PM
0
0
Tue, 25 Apr  05 PM
0
0
Tue, 25 Apr  06 PM
0
1
Tue, 25 Apr  07 PM
0
1
Tue, 25 Apr  08 PM
0
1
Tue, 25 Apr  09 PM
0
1
Tue, 25 Apr  10 PM
0
1
Tue, 25 Apr  11 PM
0
1
Wed, 26 Apr  12 AM
0
1
Wed, 26 Apr  01 AM
3
1
Wed, 26 Apr  02 AM
0
1
Wed, 26 Apr  03 AM
4
1
Wed, 26 Apr  04 AM
3
1
Wed, 26 Apr  05 AM
0
1
Wed, 26 Apr  06 AM
0
1
Wed, 26 Apr  07 AM
0
1
Wed, 26 Apr  08 AM
0
1
Wed, 26 Apr  09 AM
0
1
Wed, 26 Apr  10 AM
0
1
Wed, 26 Apr  11 AM
0
1
Wed, 26 Apr  12 PM
0
1
Wed, 26 Apr  01 PM
0
1
Wed, 26 Apr  02 PM
2
1
Wed, 26 Apr  03 PM
0
1
Wed, 26 Apr  04 PM
0
0
Wed, 26 Apr  05 PM
0
0
Wed, 26 Apr  06 PM
0
1
Wed, 26 Apr  07 PM
0
1
Wed, 26 Apr  08 PM
0
1
Wed, 26 Apr  09 PM
0
1
Wed, 26 Apr  10 PM
0
0
Wed, 26 Apr  11 PM
0
0
Thu, 27 Apr  12 AM
0
0
Thu, 27 Apr  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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