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 02/02, 4Z)
37
31
*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
Sun, 01 Feb  04 PM
36
31
Sun, 01 Feb  05 PM
29
31
Sun, 01 Feb  06 PM
20
31
Sun, 01 Feb  07 PM
14
29
Sun, 01 Feb  08 PM
12
27
Sun, 01 Feb  09 PM
10
24
Sun, 01 Feb  10 PM
11
21
Sun, 01 Feb  11 PM
14
18
Mon, 02 Feb  12 AM
16
16
Mon, 02 Feb  01 AM
16
14
Mon, 02 Feb  02 AM
17
14
Mon, 02 Feb  03 AM
17
14
Mon, 02 Feb  04 AM
17
15
Mon, 02 Feb  05 AM
16
16
Mon, 02 Feb  06 AM
15
16
Mon, 02 Feb  07 AM
11
16
Mon, 02 Feb  08 AM
9
15
Mon, 02 Feb  09 AM
10
14
Mon, 02 Feb  10 AM
15
14
Mon, 02 Feb  11 AM
22
14
Mon, 02 Feb  12 PM
28
16
Mon, 02 Feb  01 PM
31
18
Mon, 02 Feb  02 PM
34
20
Mon, 02 Feb  03 PM
34
23
Mon, 02 Feb   04 PM
32
26
Mon, 02 Feb   05 PM
27
28
Mon, 02 Feb   06 PM
15
28
Mon, 02 Feb   07 PM
7
26
Mon, 02 Feb   08 PM
5
23
Mon, 02 Feb   09 PM
4
20
Mon, 02 Feb   10 PM
3
16
Mon, 02 Feb   11 PM
5
12
Tue, 03 Feb   12 AM
7
9
Tue, 03 Feb   01 AM
12
7
Tue, 03 Feb   02 AM
18
8
Tue, 03 Feb   03 AM
23
10
Tue, 03 Feb   04 AM
25
12
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sun, 01 Feb  04 PM
0
0
Sun, 01 Feb  05 PM
0
1
Sun, 01 Feb  06 PM
0
1
Sun, 01 Feb  07 PM
0
1
Sun, 01 Feb  08 PM
0
1
Sun, 01 Feb  09 PM
0
1
Sun, 01 Feb  10 PM
0
0
Sun, 01 Feb  11 PM
0
0
Mon, 02 Feb  12 AM
0
0
Mon, 02 Feb  01 AM
0
1
Mon, 02 Feb  02 AM
0
1
Mon, 02 Feb  03 AM
0
1
Mon, 02 Feb  04 AM
0
0
Mon, 02 Feb  05 AM
0
0
Mon, 02 Feb  06 AM
0
0
Mon, 02 Feb  07 AM
0
0
Mon, 02 Feb  08 AM
0
0
Mon, 02 Feb  09 AM
0
0
Mon, 02 Feb  10 AM
0
0
Mon, 02 Feb  11 AM
0
0
Mon, 02 Feb  12 PM
0
0
Mon, 02 Feb  01 PM
0
0
Mon, 02 Feb  02 PM
0
0
Mon, 02 Feb  03 PM
0
0
Mon, 02 Feb  04 PM
0
0
Mon, 02 Feb  05 PM
0
0
Mon, 02 Feb  06 PM
0
0
Mon, 02 Feb  07 PM
0
0
Mon, 02 Feb  08 PM
0
0
Mon, 02 Feb  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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