Air Quality Forecast Guidance for Yosemite Valley, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 37.74 N, longitude: 119.57 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 05/13, 4Z)
62
60
*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, 12 May  01 PM
59
49
Wed, 12 May  02 PM
62
52
Wed, 12 May  03 PM
61
55
Wed, 12 May  04 PM
61
57
Wed, 12 May   05 PM
60
59
Wed, 12 May   06 PM
61
60
Wed, 12 May   07 PM
59
60
Wed, 12 May   08 PM
58
60
Wed, 12 May   09 PM
57
60
Wed, 12 May   10 PM
58
60
Wed, 12 May   11 PM
56
59
Thu, 13 May   12 AM
54
58
Thu, 13 May   01 AM
53
57
Thu, 13 May   02 AM
53
56
Thu, 13 May   03 AM
53
55
Thu, 13 May   04 AM
52
55
Thu, 13 May   05 AM
50
54
Thu, 13 May   06 AM
47
52
Thu, 13 May   07 AM
47
51
Thu, 13 May   08 AM
50
50
Thu, 13 May   09 AM
49
50
Thu, 13 May   10 AM
56
50
Thu, 13 May   11 AM
55
51
Thu, 13 May   12 PM
54
51
Thu, 13 May   01 PM
54
52
Thu, 13 May   02 PM
57
53
Thu, 13 May   03 PM
59
54
Thu, 13 May   04 PM
59
55
Thu, 13 May   05 PM
59
57
Thu, 13 May   06 PM
59
57
Thu, 13 May   07 PM
59
57
Thu, 13 May   08 PM
58
58
Thu, 13 May   09 PM
58
58
Thu, 13 May   10 PM
61
59
Thu, 13 May   11 PM
56
59
Fri, 14 May   12 AM
54
58
Fri, 14 May   01 AM
52
57
Fri, 14 May   02 AM
50
56
Fri, 14 May   03 AM
49
55
Fri, 14 May   04 AM
50
54
Fri, 14 May   05 AM
51
53
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, 12 May  11 AM
0
0
Wed, 12 May  12 PM
0
0
Wed, 12 May  01 PM
0
0
Wed, 12 May  02 PM
0
0
Wed, 12 May  03 PM
0
0
Wed, 12 May  04 PM
0
0
Wed, 12 May  05 PM
0
0
Wed, 12 May  06 PM
0
0
Wed, 12 May  07 PM
0
0
Wed, 12 May  08 PM
0
0
Wed, 12 May  09 PM
0
0
Wed, 12 May  10 PM
0
0
Wed, 12 May  11 PM
0
0
Thu, 13 May  12 AM
0
0
Thu, 13 May  01 AM
0
0
Thu, 13 May  02 AM
0
0
Thu, 13 May  03 AM
0
0
Thu, 13 May  04 AM
0
0
Thu, 13 May  05 AM
0
0
Thu, 13 May  06 AM
0
0
Thu, 13 May  07 AM
0
0
Thu, 13 May  08 AM
0
0
Thu, 13 May  09 AM
0
0
Thu, 13 May  10 AM
0
0
Thu, 13 May  11 AM
0
0
Thu, 13 May  12 PM
0
0
Thu, 13 May  01 PM
0
0
Thu, 13 May  02 PM
0
0
Thu, 13 May  03 PM
0
0
Thu, 13 May  04 PM
0
0
Thu, 13 May  05 PM
0
0
Thu, 13 May  06 PM
0
0
Thu, 13 May  07 PM
0
0
Thu, 13 May  08 PM
0
0
Thu, 13 May  09 PM
0
0
Thu, 13 May  10 PM
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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