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Air Quality Forecast Guidance for Hetch Hetchy, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 37.95 N, longitude: 119.79 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 05/26, 4Z)
55
54
*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)
6Z Model Run
8 Hour Average Ozone
Concentration (PPB)
6Z Model Run
Sat, 25 May  07 AM
51
51
Sat, 25 May  08 AM
56
51
Sat, 25 May  09 AM
55
52
Sat, 25 May  10 AM
54
52
Sat, 25 May  11 AM
54
53
Sat, 25 May  12 PM
53
53
Sat, 25 May  01 PM
53
54
Sat, 25 May  02 PM
53
54
Sat, 25 May  03 PM
53
54
Sat, 25 May  04 PM
53
54
Sat, 25 May   05 PM
53
53
Sat, 25 May   06 PM
52
53
Sat, 25 May   07 PM
52
53
Sat, 25 May   08 PM
51
53
Sat, 25 May   09 PM
50
52
Sat, 25 May   10 PM
47
51
Sat, 25 May   11 PM
45
50
Sun, 26 May   12 AM
45
50
Sun, 26 May   01 AM
45
48
Sun, 26 May   02 AM
45
48
Sun, 26 May   03 AM
46
47
Sun, 26 May   04 AM
46
46
Sun, 26 May   05 AM
45
45
Sun, 26 May   06 AM
45
45
Sun, 26 May   07 AM
45
45
Sun, 26 May   08 AM
50
46
Sun, 26 May   09 AM
51
46
Sun, 26 May   10 AM
52
47
Sun, 26 May   11 AM
52
48
Sun, 26 May   12 PM
52
49
Sun, 26 May   01 PM
52
50
Sun, 26 May   02 PM
51
51
Sun, 26 May   03 PM
51
51
Sun, 26 May   04 PM
51
52
Sun, 26 May   05 PM
51
52
Sun, 26 May   06 PM
52
52
Sun, 26 May   07 PM
52
51
Sun, 26 May   08 PM
51
51
Sun, 26 May   09 PM
50
51
Sun, 26 May   10 PM
49
51
Sun, 26 May   11 PM
45
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
Sat, 25 May  05 AM
0
0
Sat, 25 May  06 AM
0
0
Sat, 25 May  07 AM
0
0
Sat, 25 May  08 AM
0
0
Sat, 25 May  09 AM
0
0
Sat, 25 May  10 AM
0
0
Sat, 25 May  11 AM
0
0
Sat, 25 May  12 PM
0
0
Sat, 25 May  01 PM
0
0
Sat, 25 May  02 PM
0
0
Sat, 25 May  03 PM
0
0
Sat, 25 May  04 PM
0
0
Sat, 25 May  05 PM
0
0
Sat, 25 May  06 PM
0
0
Sat, 25 May  07 PM
0
0
Sat, 25 May  08 PM
0
0
Sat, 25 May  09 PM
0
0
Sat, 25 May  10 PM
0
0
Sat, 25 May  11 PM
0
0
Sun, 26 May  12 AM
0
0
Sun, 26 May  01 AM
0
0
Sun, 26 May  02 AM
0
0
Sun, 26 May  03 AM
0
0
Sun, 26 May  04 AM
0
0
Sun, 26 May  05 AM
0
0
Sun, 26 May  06 AM
0
0
Sun, 26 May  07 AM
0
0
Sun, 26 May  08 AM
0
0
Sun, 26 May  09 AM
0
0
Sun, 26 May  10 AM
0
0
Sun, 26 May  11 AM
0
0
Sun, 26 May  12 PM
0
0
Sun, 26 May  01 PM
0
0
Sun, 26 May  02 PM
0
0
Sun, 26 May  03 PM
0
0
Sun, 26 May  04 PM
0
0
Sun, 26 May  05 PM
0
0
Sun, 26 May  06 PM
0
0
Sun, 26 May  07 PM
0
0
Sun, 26 May  08 PM
0
0
Sun, 26 May  09 PM
0
0
Sun, 26 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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