Air Quality Forecast Guidance for Yountville, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 38.45 N, longitude: 122.29 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)
42
40
*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
Mon, 04 Mar  10 PM
26
35
Mon, 04 Mar  11 PM
27
33
Tue, 05 Mar  12 AM
28
32
Tue, 05 Mar  01 AM
29
30
Tue, 05 Mar  02 AM
27
29
Tue, 05 Mar  03 AM
21
27
Tue, 05 Mar  04 AM
18
25
Tue, 05 Mar  05 AM
17
24
Tue, 05 Mar  06 AM
17
23
Tue, 05 Mar  07 AM
16
22
Tue, 05 Mar  08 AM
17
20
Tue, 05 Mar  09 AM
23
19
Tue, 05 Mar  10 AM
29
20
Tue, 05 Mar  11 AM
31
21
Tue, 05 Mar  12 PM
31
22
Tue, 05 Mar  01 PM
32
24
Tue, 05 Mar  02 PM
32
26
Tue, 05 Mar  03 PM
34
29
Tue, 05 Mar   04 PM
35
31
Tue, 05 Mar   05 PM
37
33
Tue, 05 Mar   06 PM
37
34
Tue, 05 Mar   07 PM
34
34
Tue, 05 Mar   08 PM
29
34
Tue, 05 Mar   09 PM
27
33
Tue, 05 Mar   10 PM
26
32
Tue, 05 Mar   11 PM
26
31
Wed, 06 Mar   12 AM
26
30
Wed, 06 Mar   01 AM
27
29
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

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