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 07/31, 4Z)
62
53
*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, 30 Jul  08 PM
37
52
Wed, 30 Jul  09 PM
32
49
Wed, 30 Jul  10 PM
28
44
Wed, 30 Jul  11 PM
26
40
Thu, 31 Jul  12 AM
24
36
Thu, 31 Jul  01 AM
23
32
Thu, 31 Jul  02 AM
22
29
Thu, 31 Jul  03 AM
22
27
Thu, 31 Jul  04 AM
21
25
Thu, 31 Jul  05 AM
20
23
Thu, 31 Jul  06 AM
19
22
Thu, 31 Jul  07 AM
18
21
Thu, 31 Jul  08 AM
22
21
Thu, 31 Jul  09 AM
26
21
Thu, 31 Jul  10 AM
31
22
Thu, 31 Jul  11 AM
37
24
Thu, 31 Jul  12 PM
45
27
Thu, 31 Jul  01 PM
55
32
Thu, 31 Jul  02 PM
61
37
Thu, 31 Jul  03 PM
61
42
Thu, 31 Jul  04 PM
56
47
Thu, 31 Jul   05 PM
52
50
Thu, 31 Jul   06 PM
48
52
Thu, 31 Jul   07 PM
45
53
Thu, 31 Jul   08 PM
40
52
Thu, 31 Jul   09 PM
33
50
Thu, 31 Jul   10 PM
28
46
Thu, 31 Jul   11 PM
25
41
Fri, 01 Aug   12 AM
24
37
Fri, 01 Aug   01 AM
24
33
Fri, 01 Aug   02 AM
24
30
Fri, 01 Aug   03 AM
24
28
Fri, 01 Aug   04 AM
24
26
Fri, 01 Aug   05 AM
24
25
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, 30 Jul  08 PM
0
0
Wed, 30 Jul  09 PM
0
0
Wed, 30 Jul  10 PM
0
0
Wed, 30 Jul  11 PM
0
0
Thu, 31 Jul  12 AM
0
0
Thu, 31 Jul  01 AM
0
0
Thu, 31 Jul  02 AM
0
0
Thu, 31 Jul  03 AM
0
0
Thu, 31 Jul  04 AM
0
0
Thu, 31 Jul  05 AM
0
0
Thu, 31 Jul  06 AM
0
0
Thu, 31 Jul  07 AM
0
0
Thu, 31 Jul  08 AM
0
0
Thu, 31 Jul  09 AM
0
0
Thu, 31 Jul  10 AM
0
0
Thu, 31 Jul  11 AM
0
0
Thu, 31 Jul  12 PM
0
0
Thu, 31 Jul  01 PM
0
0
Thu, 31 Jul  02 PM
0
0
Thu, 31 Jul  03 PM
0
0
Thu, 31 Jul  04 PM
0
0
Thu, 31 Jul  05 PM
0
0
Thu, 31 Jul  06 PM
0
0
Thu, 31 Jul  07 PM
0
0
Thu, 31 Jul  08 PM
0
0
Thu, 31 Jul  09 PM
0
0
Thu, 31 Jul  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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