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 10/24, 4Z)
35
32
*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
Thu, 23 Oct  10 AM
24
28
Thu, 23 Oct  11 AM
27
28
Thu, 23 Oct  12 PM
28
27
Thu, 23 Oct  01 PM
30
27
Thu, 23 Oct  02 PM
33
28
Thu, 23 Oct  03 PM
36
29
Thu, 23 Oct  04 PM
35
30
Thu, 23 Oct  05 PM
32
31
Thu, 23 Oct  06 PM
29
31
Thu, 23 Oct  07 PM
28
31
Thu, 23 Oct   08 PM
29
32
Thu, 23 Oct   09 PM
30
32
Thu, 23 Oct   10 PM
30
31
Thu, 23 Oct   11 PM
29
30
Fri, 24 Oct   12 AM
28
29
Fri, 24 Oct   01 AM
28
29
Fri, 24 Oct   02 AM
26
29
Fri, 24 Oct   03 AM
26
28
Fri, 24 Oct   04 AM
27
28
Fri, 24 Oct   05 AM
25
27
Fri, 24 Oct   06 AM
22
26
Fri, 24 Oct   07 AM
18
25
Fri, 24 Oct   08 AM
14
23
Fri, 24 Oct   09 AM
16
22
Fri, 24 Oct   10 AM
19
21
Fri, 24 Oct   11 AM
23
20
Fri, 24 Oct   12 PM
26
20
Fri, 24 Oct   01 PM
29
21
Fri, 24 Oct   02 PM
32
22
Fri, 24 Oct   03 PM
34
24
Fri, 24 Oct   04 PM
33
26
Fri, 24 Oct   05 PM
25
28
Fri, 24 Oct   06 PM
13
27
Fri, 24 Oct   07 PM
6
25
Fri, 24 Oct   08 PM
6
22
Fri, 24 Oct   09 PM
8
20
Fri, 24 Oct   10 PM
10
17
Fri, 24 Oct   11 PM
9
14
Sat, 25 Oct   12 AM
6
10
Sat, 25 Oct   01 AM
5
8
Sat, 25 Oct   02 AM
5
7
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Thu, 23 Oct  09 AM
0
0
Thu, 23 Oct  10 AM
0
0
Thu, 23 Oct  11 AM
0
0
Thu, 23 Oct  12 PM
0
0
Thu, 23 Oct  01 PM
0
0
Thu, 23 Oct  02 PM
0
0
Thu, 23 Oct  03 PM
0
0
Thu, 23 Oct  04 PM
0
0
Thu, 23 Oct  05 PM
0
0
Thu, 23 Oct  06 PM
0
0
Thu, 23 Oct  07 PM
0
0
Thu, 23 Oct  08 PM
0
0
Thu, 23 Oct  09 PM
0
0
Thu, 23 Oct  10 PM
0
0
Thu, 23 Oct  11 PM
0
0
Fri, 24 Oct  12 AM
0
0
Fri, 24 Oct  01 AM
0
0
Fri, 24 Oct  02 AM
0
0
Fri, 24 Oct  03 AM
0
0
Fri, 24 Oct  04 AM
0
0
Fri, 24 Oct  05 AM
0
0
Fri, 24 Oct  06 AM
0
0
Fri, 24 Oct  07 AM
0
0
Fri, 24 Oct  08 AM
0
0
Fri, 24 Oct  09 AM
0
0
Fri, 24 Oct  10 AM
0
0
Fri, 24 Oct  11 AM
0
0
Fri, 24 Oct  12 PM
0
0
Fri, 24 Oct  01 PM
0
0
Fri, 24 Oct  02 PM
0
0
Fri, 24 Oct  03 PM
0
0
Fri, 24 Oct  04 PM
0
0
Fri, 24 Oct  05 PM
0
0
Fri, 24 Oct  06 PM
0
0
Fri, 24 Oct  07 PM
0
0
Fri, 24 Oct  08 PM
0
0
Fri, 24 Oct  09 PM
0
0
Fri, 24 Oct  10 PM
0
0
Fri, 24 Oct  11 PM
0
0
Sat, 25 Oct  12 AM
0
0
Sat, 25 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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