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.

10/23 10/24 10/25 10/26 10/27 10/28 10/29

San Joaquin

Stockton-Hazelton 35
39
39
38
32
35
37

Manteca

Tracy-Airport 43
47
42
42
39
41
49

Stanislaus

Modesto-14th 38
51
34
40
34
36
36

Turlock 41
52
32
39
34
37

Merced

Merced-Coffee 47
59
36
37
36
39
47

Madera

Madera-City 52
59
40
40
42
41
48

Madera 53
65
41
41
42
43
52

Fresno

Fresno-SSP 53
62
39
40
38
40
48

Clovis 58
69
44
44
43
45
53

Fresno-Garland 53
60
39
40
37
40
49

Fresno-Drummond 47
63
36
38
33
36
49

Parlier 63
72
46
46
44
56

Tranquillity 41
39
38
35
45
47

Huron

Kings

Hanford 53
59
37
39
38
42

Corcoran

Tulare

Visalia, Church 53
56
37
38
26
33
47

Porterville 56
36
36
35
41
50

Ash Mountain-SNP 61
51
50
41
45
53
56

Lower Kaweah-SNP 53
51
50
41
43
50
48

Kern

Shafter 54
63
47
41
38
43
57

Oildale 59
72
42
41
40
46
56

Bakersfield-Calif 65
78
47
42
42
50
62

Bakersfield-Muni 68
82
44
42
42
53
62

Edison

Arvin-DiGiorgio 63
76
48
42
44
47
62

Maricopa 76
49
41
43
50
64

Lebec

District Maximum 68
82
50
46
45
53
64

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 5
Federal 1-Hr Ozone 0

O3-1hr (ppb) 123
PM10 State 24-hr 158
State 1-Hr Ozone 48

O3-8hr (ppb) 105
PM2.5 Federal 2006 24-hr 30
Federal 2008 8-Hr Ozone 89

PM 10 (µg/m³) 180
PM2.5 Federal 1997 24-hr 12
Federal 1997 8-Hr Ozone 37

PM 2.5 (µg/m³) 98
State 1997 8-Hr Ozone 124
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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Thursday, October 30, 2014 Page 1 of 1