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Air Quality Forecast Guidance for Napa, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.30 N, longitude: 122.28 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 08/30, 4Z)
58
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
Fri, 29 Aug  01 PM
48
32
Fri, 29 Aug  02 PM
55
36
Fri, 29 Aug  03 PM
58
40
Fri, 29 Aug  04 PM
56
44
Fri, 29 Aug   05 PM
48
46
Fri, 29 Aug   06 PM
40
48
Fri, 29 Aug   07 PM
36
48
Fri, 29 Aug   08 PM
32
47
Fri, 29 Aug   09 PM
29
44
Fri, 29 Aug   10 PM
27
41
Fri, 29 Aug   11 PM
27
37
Sat, 30 Aug   12 AM
27
33
Sat, 30 Aug   01 AM
26
31
Sat, 30 Aug   02 AM
27
29
Sat, 30 Aug   03 AM
28
28
Sat, 30 Aug   04 AM
28
27
Sat, 30 Aug   05 AM
26
27
Sat, 30 Aug   06 AM
25
27
Sat, 30 Aug   07 AM
23
26
Sat, 30 Aug   08 AM
22
26
Sat, 30 Aug   09 AM
24
25
Sat, 30 Aug   10 AM
30
26
Sat, 30 Aug   11 AM
37
27
Sat, 30 Aug   12 PM
46
29
Sat, 30 Aug   01 PM
53
32
Sat, 30 Aug   02 PM
56
36
Sat, 30 Aug   03 PM
54
40
Sat, 30 Aug   04 PM
49
44
Sat, 30 Aug   05 PM
47
47
Sat, 30 Aug   06 PM
45
48
Sat, 30 Aug   07 PM
42
49
Sat, 30 Aug   08 PM
37
48
Sat, 30 Aug   09 PM
34
46
Sat, 30 Aug   10 PM
32
42
Sat, 30 Aug   11 PM
31
40
Sun, 31 Aug   12 AM
31
37
Sun, 31 Aug   01 AM
30
35
Sun, 31 Aug   02 AM
29
33
Sun, 31 Aug   03 AM
27
31
Sun, 31 Aug   04 AM
25
30
Sun, 31 Aug   05 AM
23
28
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Fri, 29 Aug  11 AM
0
1
Fri, 29 Aug  12 PM
0
1
Fri, 29 Aug  01 PM
0
0
Fri, 29 Aug  02 PM
0
0
Fri, 29 Aug  03 PM
0
0
Fri, 29 Aug  04 PM
0
0
Fri, 29 Aug  05 PM
0
0
Fri, 29 Aug  06 PM
0
0
Fri, 29 Aug  07 PM
0
0
Fri, 29 Aug  08 PM
0
0
Fri, 29 Aug  09 PM
0
0
Fri, 29 Aug  10 PM
0
0
Fri, 29 Aug  11 PM
0
0
Sat, 30 Aug  12 AM
0
0
Sat, 30 Aug  01 AM
0
0
Sat, 30 Aug  02 AM
0
0
Sat, 30 Aug  03 AM
0
0
Sat, 30 Aug  04 AM
0
0
Sat, 30 Aug  05 AM
0
0
Sat, 30 Aug  06 AM
0
0
Sat, 30 Aug  07 AM
0
0
Sat, 30 Aug  08 AM
0
0
Sat, 30 Aug  09 AM
0
0
Sat, 30 Aug  10 AM
0
0
Sat, 30 Aug  11 AM
0
0
Sat, 30 Aug  12 PM
0
0
Sat, 30 Aug  01 PM
0
0
Sat, 30 Aug  02 PM
0
0
Sat, 30 Aug  03 PM
0
0
Sat, 30 Aug  04 PM
0
0
Sat, 30 Aug  05 PM
0
0
Sat, 30 Aug  06 PM
0
0
Sat, 30 Aug  07 PM
0
0
Sat, 30 Aug  08 PM
0
0
Sat, 30 Aug  09 PM
0
0
Sat, 30 Aug  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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