Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 34.73 N, longitude: 118.48 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 06/27, 4Z)
70
64
*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
Sun, 26 Jun  07 PM
66
64
Sun, 26 Jun  08 PM
63
64
Sun, 26 Jun  09 PM
56
64
Sun, 26 Jun  10 PM
51
62
Sun, 26 Jun  11 PM
47
61
Mon, 27 Jun  12 AM
41
58
Mon, 27 Jun  01 AM
40
54
Mon, 27 Jun  02 AM
38
50
Mon, 27 Jun  03 AM
35
46
Mon, 27 Jun  04 AM
32
42
Mon, 27 Jun  05 AM
31
39
Mon, 27 Jun  06 AM
31
37
Mon, 27 Jun  07 AM
31
35
Mon, 27 Jun  08 AM
39
35
Mon, 27 Jun  09 AM
48
36
Mon, 27 Jun  10 AM
54
38
Mon, 27 Jun  11 AM
59
41
Mon, 27 Jun  12 PM
60
44
Mon, 27 Jun  01 PM
60
48
Mon, 27 Jun  02 PM
65
52
Mon, 27 Jun  03 PM
72
57
Mon, 27 Jun  04 PM
76
62
Mon, 27 Jun   05 PM
75
65
Mon, 27 Jun   06 PM
74
67
Mon, 27 Jun   07 PM
73
69
Mon, 27 Jun   08 PM
70
70
Mon, 27 Jun   09 PM
65
71
Mon, 27 Jun   10 PM
58
70
Mon, 27 Jun   11 PM
52
68
Tue, 28 Jun   12 AM
46
64
Tue, 28 Jun   01 AM
41
60
Tue, 28 Jun   02 AM
34
55
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)
06Z Model Run
Sun, 26 Jun  07 PM
0
0
Sun, 26 Jun  08 PM
0
0
Sun, 26 Jun  09 PM
0
0
Sun, 26 Jun  10 PM
0
0
Sun, 26 Jun  11 PM
0
1
Mon, 27 Jun  12 AM
0
1
Mon, 27 Jun  01 AM
2
1
Mon, 27 Jun  02 AM
2
0
Mon, 27 Jun  03 AM
0
0
Mon, 27 Jun  04 AM
0
0
Mon, 27 Jun  05 AM
2
0
Mon, 27 Jun  06 AM
0
0
Mon, 27 Jun  07 AM
2
0
Mon, 27 Jun  08 AM
2
0
Mon, 27 Jun  09 AM
0
0
Mon, 27 Jun  10 AM
0
0
Mon, 27 Jun  11 AM
0
0
Mon, 27 Jun  12 PM
0
0
Mon, 27 Jun  01 PM
0
0
Mon, 27 Jun  02 PM
0
0
Mon, 27 Jun  03 PM
0
0
Mon, 27 Jun  04 PM
0
0
Mon, 27 Jun  05 PM
0
0
Mon, 27 Jun  06 PM
0
0
Mon, 27 Jun  07 PM
0
0
Mon, 27 Jun  08 PM
0
0
Mon, 27 Jun  09 PM
0
0
Mon, 27 Jun  10 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