Air Quality Forecast Guidance for Yosemite Valley, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 37.70 N, longitude: 119.43 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)
49
46
*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  03 AM
40
42
Mon, 21 Sep  04 AM
43
42
Mon, 21 Sep  05 AM
41
41
Mon, 21 Sep  06 AM
46
42
Mon, 21 Sep  07 AM
39
41
Mon, 21 Sep  08 AM
38
41
Mon, 21 Sep  09 AM
39
40
Mon, 21 Sep  10 AM
41
41
Mon, 21 Sep  11 AM
39
41
Mon, 21 Sep  12 PM
43
41
Mon, 21 Sep  01 PM
45
41
Mon, 21 Sep  02 PM
48
41
Mon, 21 Sep  03 PM
50
43
Mon, 21 Sep  04 PM
51
44
Mon, 21 Sep   05 PM
52
46
Mon, 21 Sep   06 PM
53
48
Mon, 21 Sep   07 PM
52
49
Mon, 21 Sep   08 PM
52
50
Mon, 21 Sep   09 PM
60
52
Mon, 21 Sep   10 PM
59
53
Mon, 21 Sep   11 PM
57
54
Tue, 22 Sep   12 AM
53
55
Tue, 22 Sep   01 AM
50
54
Tue, 22 Sep   02 AM
45
53
Tue, 22 Sep   03 AM
45
52
Tue, 22 Sep   04 AM
45
52
Tue, 22 Sep   05 AM
43
50
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  03 AM
0
149
Mon, 21 Sep  04 AM
0
194
Mon, 21 Sep  05 AM
0
129
Mon, 21 Sep  06 AM
0
124
Mon, 21 Sep  07 AM
0
113
Mon, 21 Sep  08 AM
0
88
Mon, 21 Sep  09 AM
0
77
Mon, 21 Sep  10 AM
0
54
Mon, 21 Sep  11 AM
7
51
Mon, 21 Sep  12 PM
13
57
Mon, 21 Sep  01 PM
38
60
Mon, 21 Sep  02 PM
12
65
Mon, 21 Sep  03 PM
0
60
Mon, 21 Sep  04 PM
0
56
Mon, 21 Sep  05 PM
0
48
Mon, 21 Sep  06 PM
6
40
Mon, 21 Sep  07 PM
0
40
Mon, 21 Sep  08 PM
0
42
Mon, 21 Sep  09 PM
0
47
Mon, 21 Sep  10 PM
0
39

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


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