Air Quality Forecast Guidance for Yosemite Valley, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 37.75 N, longitude: 119.53 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 09/21, 4Z)
51
48
*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
Mon, 21 Sep  02 AM
39
45
Mon, 21 Sep  03 AM
40
44
Mon, 21 Sep  04 AM
44
44
Mon, 21 Sep  05 AM
40
43
Mon, 21 Sep  06 AM
44
43
Mon, 21 Sep  07 AM
37
42
Mon, 21 Sep  08 AM
37
41
Mon, 21 Sep  09 AM
35
40
Mon, 21 Sep  10 AM
39
40
Mon, 21 Sep  11 AM
39
39
Mon, 21 Sep  12 PM
43
39
Mon, 21 Sep  01 PM
44
40
Mon, 21 Sep  02 PM
48
40
Mon, 21 Sep  03 PM
51
42
Mon, 21 Sep  04 PM
51
44
Mon, 21 Sep   05 PM
52
46
Mon, 21 Sep   06 PM
52
47
Mon, 21 Sep   07 PM
51
49
Mon, 21 Sep   08 PM
52
50
Mon, 21 Sep   09 PM
62
52
Mon, 21 Sep   10 PM
61
54
Mon, 21 Sep   11 PM
59
55
Tue, 22 Sep   12 AM
55
56
Tue, 22 Sep   01 AM
53
56
Tue, 22 Sep   02 AM
46
55
Tue, 22 Sep   03 AM
47
54
Tue, 22 Sep   04 AM
46
54
Tue, 22 Sep   05 AM
44
51
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Mon, 21 Sep  02 AM
0
34
Mon, 21 Sep  03 AM
0
55
Mon, 21 Sep  04 AM
0
92
Mon, 21 Sep  05 AM
0
96
Mon, 21 Sep  06 AM
0
128
Mon, 21 Sep  07 AM
134
149
Mon, 21 Sep  08 AM
250
134
Mon, 21 Sep  09 AM
216
121
Mon, 21 Sep  10 AM
72
96
Mon, 21 Sep  11 AM
29
86
Mon, 21 Sep  12 PM
17
47
Mon, 21 Sep  01 PM
28
34
Mon, 21 Sep  02 PM
6
52
Mon, 21 Sep  03 PM
0
72
Mon, 21 Sep  04 PM
11
70
Mon, 21 Sep  05 PM
8
91
Mon, 21 Sep  06 PM
0
103
Mon, 21 Sep  07 PM
0
101
Mon, 21 Sep  08 PM
0
61
Mon, 21 Sep  09 PM
0
30
Mon, 21 Sep  10 PM
0
41

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