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 03/05, 4Z)
38
33
*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, 04 Mar  08 PM
9
26
Wed, 04 Mar  09 PM
9
23
Wed, 04 Mar  10 PM
12
20
Wed, 04 Mar  11 PM
18
17
Thu, 05 Mar  12 AM
23
15
Thu, 05 Mar  01 AM
26
15
Thu, 05 Mar  02 AM
27
17
Thu, 05 Mar  03 AM
27
19
Thu, 05 Mar  04 AM
26
21
Thu, 05 Mar  05 AM
25
23
Thu, 05 Mar  06 AM
22
24
Thu, 05 Mar  07 AM
19
24
Thu, 05 Mar  08 AM
18
24
Thu, 05 Mar  09 AM
20
23
Thu, 05 Mar  10 AM
29
23
Thu, 05 Mar  11 AM
35
24
Thu, 05 Mar  12 PM
37
26
Thu, 05 Mar  01 PM
39
27
Thu, 05 Mar  02 PM
41
30
Thu, 05 Mar  03 PM
43
33
Thu, 05 Mar   04 PM
43
36
Thu, 05 Mar   05 PM
36
38
Thu, 05 Mar   06 PM
21
37
Thu, 05 Mar   07 PM
14
34
Thu, 05 Mar   08 PM
13
31
Thu, 05 Mar   09 PM
15
28
Thu, 05 Mar   10 PM
17
25
Thu, 05 Mar   11 PM
20
22
Fri, 06 Mar   12 AM
23
20
Fri, 06 Mar   01 AM
25
19
Fri, 06 Mar   02 AM
25
19
Fri, 06 Mar   03 AM
25
20
Fri, 06 Mar   04 AM
24
22
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, 04 Mar  08 PM
0
0
Wed, 04 Mar  09 PM
0
0
Wed, 04 Mar  10 PM
0
0
Wed, 04 Mar  11 PM
0
0
Thu, 05 Mar  12 AM
0
0
Thu, 05 Mar  01 AM
0
0
Thu, 05 Mar  02 AM
0
0
Thu, 05 Mar  03 AM
0
0
Thu, 05 Mar  04 AM
0
0
Thu, 05 Mar  05 AM
0
0
Thu, 05 Mar  06 AM
0
0
Thu, 05 Mar  07 AM
0
0
Thu, 05 Mar  08 AM
0
0
Thu, 05 Mar  09 AM
0
0
Thu, 05 Mar  10 AM
0
0
Thu, 05 Mar  11 AM
0
0
Thu, 05 Mar  12 PM
0
0
Thu, 05 Mar  01 PM
0
0
Thu, 05 Mar  02 PM
0
0
Thu, 05 Mar  03 PM
0
0
Thu, 05 Mar  04 PM
0
0
Thu, 05 Mar  05 PM
0
0
Thu, 05 Mar  06 PM
0
0
Thu, 05 Mar  07 PM
0
0
Thu, 05 Mar  08 PM
0
0
Thu, 05 Mar  09 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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