Air Quality Forecast Guidance for Capetown, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 40.48 N, longitude: 124.35 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 09/21, 4Z)
28
26
*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, 20 Sep  10 PM
22
25
Mon, 20 Sep  11 PM
19
25
Tue, 21 Sep  12 AM
16
24
Tue, 21 Sep  01 AM
15
22
Tue, 21 Sep  02 AM
16
21
Tue, 21 Sep  03 AM
16
19
Tue, 21 Sep  04 AM
18
18
Tue, 21 Sep  05 AM
16
17
Tue, 21 Sep  06 AM
20
17
Tue, 21 Sep  07 AM
16
17
Tue, 21 Sep  08 AM
15
16
Tue, 21 Sep  09 AM
17
17
Tue, 21 Sep  10 AM
19
17
Tue, 21 Sep  11 AM
22
18
Tue, 21 Sep  12 PM
28
19
Tue, 21 Sep  01 PM
30
21
Tue, 21 Sep  02 PM
31
22
Tue, 21 Sep  03 PM
30
24
Tue, 21 Sep  04 PM
30
26
Tue, 21 Sep   05 PM
30
27
Tue, 21 Sep   06 PM
30
29
Tue, 21 Sep   07 PM
30
30
Tue, 21 Sep   08 PM
28
30
Tue, 21 Sep   09 PM
26
29
Tue, 21 Sep   10 PM
22
28
Tue, 21 Sep   11 PM
17
27
Wed, 22 Sep   12 AM
17
25
Wed, 22 Sep   01 AM
18
24
Wed, 22 Sep   02 AM
18
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
Mon, 20 Sep  10 PM
110
10
Mon, 20 Sep  11 PM
154
8
Tue, 21 Sep  12 AM
167
6
Tue, 21 Sep  01 AM
132
4
Tue, 21 Sep  02 AM
73
2
Tue, 21 Sep  03 AM
28
1
Tue, 21 Sep  04 AM
11
1
Tue, 21 Sep  05 AM
7
1
Tue, 21 Sep  06 AM
7
1
Tue, 21 Sep  07 AM
10
1
Tue, 21 Sep  08 AM
5
1
Tue, 21 Sep  09 AM
2
1
Tue, 21 Sep  10 AM
0
2
Tue, 21 Sep  11 AM
0
2
Tue, 21 Sep  12 PM
1
1
Tue, 21 Sep  01 PM
3
2
Tue, 21 Sep  02 PM
11
2
Tue, 21 Sep  03 PM
16
2
Tue, 21 Sep  04 PM
17
2
Tue, 21 Sep  05 PM
15
1
Tue, 21 Sep  06 PM
12
2
Tue, 21 Sep  07 PM
13
3
Tue, 21 Sep  08 PM
14
5
Tue, 21 Sep  09 PM
15
7
Tue, 21 Sep  10 PM
16
5

National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


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