Air Quality Forecast Guidance for Palo Alto, CA

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 37.41 N, longitude: 122.12 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 08/20, 4Z)
37
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)

6Z Model Run
8 Hour Average Ozone
Concentration (PPB)

6Z Model Run
Sat, 19 Aug  09 AM
23
21
Sat, 19 Aug  10 AM
25
22
Sat, 19 Aug  11 AM
29
23
Sat, 19 Aug  12 PM
34
25
Sat, 19 Aug  01 PM
37
27
Sat, 19 Aug  02 PM
37
29
Sat, 19 Aug  03 PM
35
30
Sat, 19 Aug  04 PM
33
32
Sat, 19 Aug   05 PM
30
33
Sat, 19 Aug   06 PM
28
33
Sat, 19 Aug   07 PM
26
32
Sat, 19 Aug   08 PM
23
31
Sat, 19 Aug   09 PM
22
29
Sat, 19 Aug   10 PM
21
27
Sat, 19 Aug   11 PM
20
25
Sun, 20 Aug   12 AM
21
24
Sun, 20 Aug   01 AM
21
23
Sun, 20 Aug   02 AM
21
22
Sun, 20 Aug   03 AM
22
21
Sun, 20 Aug   04 AM
22
21
Sun, 20 Aug   05 AM
22
21
Sun, 20 Aug   06 AM
21
21
Sun, 20 Aug   07 AM
20
21
Sun, 20 Aug   08 AM
19
21
Sun, 20 Aug   09 AM
20
21
Sun, 20 Aug   10 AM
22
21
Sun, 20 Aug   11 AM
25
21
Sun, 20 Aug   12 PM
30
22
Sun, 20 Aug   01 PM
34
24
Sun, 20 Aug   02 PM
37
26
Sun, 20 Aug   03 PM
37
28
Sun, 20 Aug   04 PM
36
30
Sun, 20 Aug   05 PM
34
32
Sun, 20 Aug   06 PM
32
33
Sun, 20 Aug   07 PM
29
34
Sun, 20 Aug   08 PM
26
33
Sun, 20 Aug   09 PM
23
32
Sun, 20 Aug   10 PM
21
30
Sun, 20 Aug   11 PM
20
28
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sat, 19 Aug  09 AM
0
22
Sat, 19 Aug  10 AM
0
21
Sat, 19 Aug  11 AM
18
24
Sat, 19 Aug  12 PM
60
24
Sat, 19 Aug  01 PM
48
21
Sat, 19 Aug  02 PM
54
18
Sat, 19 Aug  03 PM
70
15
Sat, 19 Aug  04 PM
93
20
Sat, 19 Aug  05 PM
82
30
Sat, 19 Aug  06 PM
50
25
Sat, 19 Aug  07 PM
92
18
Sat, 19 Aug  08 PM
116
21
Sat, 19 Aug  09 PM
212
21
Sat, 19 Aug  10 PM
72
17
Sat, 19 Aug  11 PM
102
19
Sun, 20 Aug  12 AM
104
21
Sun, 20 Aug  01 AM
84
22
Sun, 20 Aug  02 AM
37
38
Sun, 20 Aug  03 AM
94
73
Sun, 20 Aug  04 AM
121
94
Sun, 20 Aug  05 AM
86
65
Sun, 20 Aug  06 AM
54
35
Sun, 20 Aug  07 AM
64
16
Sun, 20 Aug  08 AM
50
11
Sun, 20 Aug  09 AM
32
9
Sun, 20 Aug  10 AM
0
7
Sun, 20 Aug  11 AM
27
10
Sun, 20 Aug  12 PM
45
12
Sun, 20 Aug  01 PM
42
12
Sun, 20 Aug  02 PM
76
11
Sun, 20 Aug  03 PM
45
10
Sun, 20 Aug  04 PM
12
7
Sun, 20 Aug  05 PM
25
4
Sun, 20 Aug  06 PM
0
5
Sun, 20 Aug  07 PM
0
5
Sun, 20 Aug  08 PM
0
5
Sun, 20 Aug  09 PM
67
10
Sun, 20 Aug  10 PM
57
9

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