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.

07/23 07/24 07/25 07/26 07/27 07/28 07/29

San Joaquin

Stockton-Hazelton 37
47
40
39
47
61
62

Manteca

Tracy-Airport 40
48
29
48
52
54
71

Stanislaus

Modesto-14th 45
54
38
46
52
68
78

Turlock 51
54
45
49
52
64
80

Merced

Merced-Coffee 58
56
50
55
61
64
84

Madera

Madera-City 55
52
47
52
61
63
90

Madera 55
53
51
52
60
62
84

Fresno

Fresno-SSP 51
48
48
50
58
61
82

Clovis 49
43
42
45
51
58
74

Fresno-Garland 51
48
48
51
58
63
80

Fresno-Drummond 45
44
35
37
44
48

Parlier 53
54
53
52
56
74
75

Tranquillity 46
48
47
44
51
50
68

Huron

Kings

Hanford 51
50
50
51
52
57
75

Corcoran

Tulare

Visalia, Church 49
55
53
49
53
75
70

Porterville 55
63
59
55
58
75
78

Ash Mountain-SNP 60
67
63
62
65
84
69

Lower Kaweah-SNP 61
77
65

Kern

Shafter 50
56
59
51
56
68
85

Oildale 56
52
56
69
78

Bakersfield-Calif 51
58
55
52
57
75
88

Bakersfield-Muni 52
60
55
53
59
79
91

Edison

Arvin-DiGiorgio 57
63
58
55
62
79
88

Maricopa 55
56
58
54
55
69
78

Lebec

District Maximum 60
67
63
62
65
84
91

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

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

O3-1hr (ppb) 110
PM10 State 24-hr 27
State 1-Hr Ozone 17

O3-8hr (ppb) 98
PM2.5 Federal 2006 24-hr 30
Federal 2008 8-Hr Ozone 40

PM 10 (µg/m³) 130
PM2.5 Federal 1997 24-hr 5
Federal 1997 8-Hr Ozone 15

PM 2.5 (µg/m³) 99
State 1997 8-Hr Ozone 51
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, July 30, 2015 Page 1 of 1