Air Quality Forecast Guidance for Upper Marlboro, MD

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.82 N, longitude: 76.75 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 02/22, 4Z)
40
37
*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
Wed, 21 Feb  12 PM
36
24
Wed, 21 Feb  01 PM
37
27
Wed, 21 Feb  02 PM
38
29
Wed, 21 Feb  03 PM
39
33
Wed, 21 Feb  04 PM
37
35
Wed, 21 Feb  05 PM
40
37
Wed, 21 Feb  06 PM
37
37
Wed, 21 Feb   07 PM
24
36
Wed, 21 Feb   08 PM
12
33
Wed, 21 Feb   09 PM
13
30
Wed, 21 Feb   10 PM
15
27
Wed, 21 Feb   11 PM
11
23
Thu, 22 Feb   12 AM
8
20
Thu, 22 Feb   01 AM
4
15
Thu, 22 Feb   02 AM
5
11
Thu, 22 Feb   03 AM
4
9
Thu, 22 Feb   04 AM
4
8
Thu, 22 Feb   05 AM
3
7
Thu, 22 Feb   06 AM
8
6
Thu, 22 Feb   07 AM
14
6
Thu, 22 Feb   08 AM
10
6
Thu, 22 Feb   09 AM
22
9
Thu, 22 Feb   10 AM
28
12
Thu, 22 Feb   11 AM
29
15
Thu, 22 Feb   12 PM
35
19
Thu, 22 Feb   01 PM
35
23
Thu, 22 Feb   02 PM
38
26
Thu, 22 Feb   03 PM
42
30
Thu, 22 Feb   04 PM
45
34
Thu, 22 Feb   05 PM
49
38
Thu, 22 Feb   06 PM
49
40
Thu, 22 Feb   07 PM
42
42
Thu, 22 Feb   08 PM
39
42
Thu, 22 Feb   09 PM
42
43
Thu, 22 Feb   10 PM
42
44
Thu, 22 Feb   11 PM
38
43
Fri, 23 Feb   12 AM
35
42
Fri, 23 Feb   01 AM
34
40
Fri, 23 Feb   02 AM
36
38
Fri, 23 Feb   03 AM
36
38
Fri, 23 Feb   04 AM
34
37
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Wed, 21 Feb  12 PM
0
0
Wed, 21 Feb  01 PM
0
0
Wed, 21 Feb  02 PM
0
0
Wed, 21 Feb  03 PM
0
0
Wed, 21 Feb  04 PM
0
0
Wed, 21 Feb  05 PM
0
0
Wed, 21 Feb  06 PM
0
0
Wed, 21 Feb  07 PM
0
0
Wed, 21 Feb  08 PM
0
0
Wed, 21 Feb  09 PM
0
0
Wed, 21 Feb  10 PM
0
0
Wed, 21 Feb  11 PM
0
0
Thu, 22 Feb  12 AM
0
0
Thu, 22 Feb  01 AM
0
0
Thu, 22 Feb  02 AM
0
0
Thu, 22 Feb  03 AM
0
0
Thu, 22 Feb  04 AM
0
0
Thu, 22 Feb  05 AM
0
0
Thu, 22 Feb  06 AM
0
0
Thu, 22 Feb  07 AM
0
0
Thu, 22 Feb  08 AM
0
0
Thu, 22 Feb  09 AM
0
0
Thu, 22 Feb  10 AM
0
0
Thu, 22 Feb  11 AM
0
0
Thu, 22 Feb  12 PM
0
0
Thu, 22 Feb  01 PM
0
0
Thu, 22 Feb  02 PM
0
0
Thu, 22 Feb  03 PM
0
0
Thu, 22 Feb  04 PM
0
0
Thu, 22 Feb  05 PM
0
0
Thu, 22 Feb  06 PM
0
0
Thu, 22 Feb  07 PM
0
0
Thu, 22 Feb  08 PM
0
0

National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities