Ozone Eight-Hour Maximum (PPB)

The information in this report is based on preliminary data and is subject to change. The real-time PM10/PM2.5

monitoring equipment is used for air quality forecasting and trend analysis.

11/27 11/28 11/29 11/30 12/01 12/02 12/03

San Joaquin

Stockton-Hazelton 24
22
23
26
29
25
32

Manteca

Tracy-Airport 20
36
37
34
37
36
46

Stanislaus

Modesto-14th 18
29
29
30
33
28
35

Turlock 21
28
27
31
33
38
33

Merced

Merced-Coffee 24
28
33
34
37
41
33

Madera

Madera 39
35
42
42
42
46
33

Madera-City 34
29
38
36
40
43
30

Fresno

Clovis 35
34
36
41
40
47
24

Fresno-Drummond 39
33
34
39
38
45
23

Fresno-Garland 28
31
29
33
35
35
25

Fresno-SSP 33
37
38
40
42
31

Huron

Parlier 39
36
30
40
45
38
23

Tranquillity 32
30
39
41
42
42
34

Kings

Corcoran

Hanford 35
30
24
38
42
46
22

Tulare

Ash Mountain-SNP 38
40
40
42
44
43
33

Lower Kaweah-SNP 36
39
40
42
40
41
41

Porterville 33
26
31
39
44
46
25

Visalia, Church 27
27
18
33
36
33
17

Kern

Arvin-DiGiorgio 41
38
32
41
46
40
45

Bakersfield-Calif 35

Bakersfield-Muni 38
25
27
36
45
38
36

Edison 40
39
32
35
43
34
41

Lebec

Maricopa 39
35
32
46
50
51
45

Oildale 37
33
31
37
40
30
35

Shafter 33
16
28
40
39
38
32

District Maximum 41
40
42
46
50
51
46

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 2
Federal 1-Hr Ozone 0

O3-1hr (ppb) 121
PM10 State 24-hr 147
State 1-Hr Ozone 46

O3-8hr (ppb) 110
PM2.5 Federal 2006 24-hr 46
Federal 2008 8-Hr Ozone 93

PM 10 (µg/m³) 224
PM2.5 Federal 1997 24-hr 2
Federal 1997 8-Hr Ozone 33

PM 2.5 (µg/m³) 68
State 1997 8-Hr Ozone 112
¹Some of the days over the standards shown above may be the result of “Natural Events” such as extreme wind episodes, or
“Exceptional Events” such as wildfires and would not count as violations of the federal standard.
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Wednesday, December 04, 2013 Page 1 of 1