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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 02/01, 4Z)
60
58
*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, 31 Jan  06 AM
49
47
Sat, 31 Jan  07 AM
51
48
Sat, 31 Jan  08 AM
52
49
Sat, 31 Jan  09 AM
53
50
Sat, 31 Jan  10 AM
53
50
Sat, 31 Jan  11 AM
54
51
Sat, 31 Jan  12 PM
55
52
Sat, 31 Jan  01 PM
57
53
Sat, 31 Jan  02 PM
59
54
Sat, 31 Jan  03 PM
60
55
Sat, 31 Jan   04 PM
59
56
Sat, 31 Jan   05 PM
57
57
Sat, 31 Jan   06 PM
56
57
Sat, 31 Jan   07 PM
56
58
Sat, 31 Jan   08 PM
56
58
Sat, 31 Jan   09 PM
56
58
Sat, 31 Jan   10 PM
56
57
Sat, 31 Jan   11 PM
55
56
Sun, 01 Feb   12 AM
54
56
Sun, 01 Feb   01 AM
54
56
Sun, 01 Feb   02 AM
53
55
Sun, 01 Feb   03 AM
52
55
Sun, 01 Feb   04 AM
51
54
Sun, 01 Feb   05 AM
51
53
Sun, 01 Feb   06 AM
51
53
Sun, 01 Feb   07 AM
51
52
Sun, 01 Feb   08 AM
51
52
Sun, 01 Feb   09 AM
49
51
Sun, 01 Feb   10 AM
48
51
Sun, 01 Feb   11 AM
48
50
Sun, 01 Feb   12 PM
48
50
Sun, 01 Feb   01 PM
48
49
Sun, 01 Feb   02 PM
48
49
Sun, 01 Feb   03 PM
48
48
Sun, 01 Feb   04 PM
48
48
Sun, 01 Feb   05 PM
47
48
Sun, 01 Feb   06 PM
44
47
Sun, 01 Feb   07 PM
41
46
Sun, 01 Feb   08 PM
42
46
Sun, 01 Feb   09 PM
42
45
Sun, 01 Feb   10 PM
41
44
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, 31 Jan  05 AM
0
0
Sat, 31 Jan  06 AM
0
0
Sat, 31 Jan  07 AM
0
0
Sat, 31 Jan  08 AM
0
0
Sat, 31 Jan  09 AM
0
0
Sat, 31 Jan  10 AM
0
0
Sat, 31 Jan  11 AM
0
0
Sat, 31 Jan  12 PM
0
0
Sat, 31 Jan  01 PM
0
0
Sat, 31 Jan  02 PM
0
0
Sat, 31 Jan  03 PM
0
0
Sat, 31 Jan  04 PM
0
0
Sat, 31 Jan  05 PM
0
0
Sat, 31 Jan  06 PM
0
0
Sat, 31 Jan  07 PM
0
0
Sat, 31 Jan  08 PM
0
0
Sat, 31 Jan  09 PM
0
0
Sat, 31 Jan  10 PM
0
0
Sat, 31 Jan  11 PM
0
0
Sun, 01 Feb  12 AM
0
0
Sun, 01 Feb  01 AM
0
0
Sun, 01 Feb  02 AM
0
0
Sun, 01 Feb  03 AM
0
0
Sun, 01 Feb  04 AM
0
0
Sun, 01 Feb  05 AM
0
0
Sun, 01 Feb  06 AM
0
0
Sun, 01 Feb  07 AM
0
0
Sun, 01 Feb  08 AM
0
0
Sun, 01 Feb  09 AM
0
0
Sun, 01 Feb  10 AM
0
0
Sun, 01 Feb  11 AM
0
0
Sun, 01 Feb  12 PM
0
0
Sun, 01 Feb  01 PM
0
0
Sun, 01 Feb  02 PM
0
0
Sun, 01 Feb  03 PM
0
0
Sun, 01 Feb  04 PM
0
0
Sun, 01 Feb  05 PM
0
0
Sun, 01 Feb  06 PM
0
0
Sun, 01 Feb  07 PM
0
0
Sun, 01 Feb  08 PM
0
0
Sun, 01 Feb  09 PM
0
0

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Graphical Air Quality Forecast Guidance
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