Air Quality Forecast Guidance for Napa, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.29 N, longitude: 122.32 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 08/17, 4Z)
53
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)

6Z Model Run
8 Hour Average Ozone
Concentration (PPB)

6Z Model Run
Tue, 16 Aug  07 AM
2
5
Tue, 16 Aug  08 AM
5
5
Tue, 16 Aug  09 AM
13
6
Tue, 16 Aug  10 AM
21
8
Tue, 16 Aug  11 AM
30
11
Tue, 16 Aug  12 PM
38
15
Tue, 16 Aug  01 PM
46
20
Tue, 16 Aug  02 PM
50
26
Tue, 16 Aug  03 PM
52
32
Tue, 16 Aug  04 PM
53
38
Tue, 16 Aug   05 PM
53
43
Tue, 16 Aug   06 PM
51
47
Tue, 16 Aug   07 PM
44
48
Tue, 16 Aug   08 PM
32
48
Tue, 16 Aug   09 PM
21
45
Tue, 16 Aug   10 PM
14
40
Tue, 16 Aug   11 PM
10
35
Wed, 17 Aug   12 AM
8
29
Wed, 17 Aug   01 AM
6
23
Wed, 17 Aug   02 AM
6
18
Wed, 17 Aug   03 AM
5
13
Wed, 17 Aug   04 AM
5
9
Wed, 17 Aug   05 AM
4
7
Wed, 17 Aug   06 AM
3
6
Wed, 17 Aug   07 AM
2
5
Wed, 17 Aug   08 AM
5
4
Wed, 17 Aug   09 AM
12
5
Wed, 17 Aug   10 AM
17
7
Wed, 17 Aug   11 AM
23
9
Wed, 17 Aug   12 PM
28
12
Wed, 17 Aug   01 PM
36
16
Wed, 17 Aug   02 PM
43
21
Wed, 17 Aug   03 PM
47
26
Wed, 17 Aug   04 PM
47
31
Wed, 17 Aug   05 PM
42
35
Wed, 17 Aug   06 PM
37
38
Wed, 17 Aug   07 PM
33
39
Wed, 17 Aug   08 PM
26
39
Wed, 17 Aug   09 PM
17
36
Wed, 17 Aug   10 PM
13
33
Wed, 17 Aug   11 PM
10
28
Thu, 18 Aug   12 AM
8
23
Thu, 18 Aug   01 AM
7
19
Thu, 18 Aug   02 AM
6
15
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Tue, 16 Aug  06 AM
0
0
Tue, 16 Aug  07 AM
0
0
Tue, 16 Aug  08 AM
0
0
Tue, 16 Aug  09 AM
0
0
Tue, 16 Aug  10 AM
0
0
Tue, 16 Aug  11 AM
0
0
Tue, 16 Aug  12 PM
0
0
Tue, 16 Aug  01 PM
0
0
Tue, 16 Aug  02 PM
0
0
Tue, 16 Aug  03 PM
0
0
Tue, 16 Aug  04 PM
0
0
Tue, 16 Aug  05 PM
0
0
Tue, 16 Aug  06 PM
0
0
Tue, 16 Aug  07 PM
0
0
Tue, 16 Aug  08 PM
0
0
Tue, 16 Aug  09 PM
0
0
Tue, 16 Aug  10 PM
0
0
Tue, 16 Aug  11 PM
0
0
Wed, 17 Aug  12 AM
0
0
Wed, 17 Aug  01 AM
0
0
Wed, 17 Aug  02 AM
0
0
Wed, 17 Aug  03 AM
0
0
Wed, 17 Aug  04 AM
0
0
Wed, 17 Aug  05 AM
0
0
Wed, 17 Aug  06 AM
0
0
Wed, 17 Aug  07 AM
0
0
Wed, 17 Aug  08 AM
0
0
Wed, 17 Aug  09 AM
0
0
Wed, 17 Aug  10 AM
0
0
Wed, 17 Aug  11 AM
0
0
Wed, 17 Aug  12 PM
0
0
Wed, 17 Aug  01 PM
0
0
Wed, 17 Aug  02 PM
0
0
Wed, 17 Aug  03 PM
0
0
Wed, 17 Aug  04 PM
0
0
Wed, 17 Aug  05 PM
0
0
Wed, 17 Aug  06 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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