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.

08/17 08/18 08/19 08/20 08/21 08/22 08/23

San Joaquin

Stockton-Hazelton 66
55
58
55
50
45
44

Manteca

Tracy-Airport 79
68
74
74
57
51
53

Stanislaus

Modesto-14th 92
67
74
68
63
56
53

Turlock 87
72
75
72
65
56
54

Merced

Merced-Coffee 80
81
71
75
68
58
52

Madera

Madera-City 84
88
82
79
72
59
54

Madera 77
81
75
74
68
56

Fresno

Fresno-SSP 79
84
79
76
71
59
58

Clovis 91
92
95
88
78
64

Fresno-Garland 87
88
84
83
75
61
62

Fresno-Drummond 84
87
75
80
77
64
61

Parlier 89
85
78
86
78
76
70

Tranquillity 81
76
78
72
71
57

Huron

Kings

Hanford 87
83
72
76
72
63
56

Corcoran

Tulare

Visalia, Church 74
69
67
71
72
64
58

Porterville 82
76
61
83
77
60
65

Ash Mountain-SNP 85
82
65
85
75
69
75

Lower Kaweah-SNP 80
79
59
82
72
64
75

Kern

Shafter 80
76
70
81
75
55
61

Oildale 71
67
63
66
64
48
51

Bakersfield-Calif 79
82
75
80
77
50
66

Bakersfield-Muni 83
85
79
82
81
54
68

Edison 75
77
79
78
78
53
67

Arvin-DiGiorgio 77
75
79
82
77
52
67

Maricopa 77
74
74
78
76
53
62

Lebec

District Maximum 92
92
95
88
81
76
75

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) 120
PM10 State 24-hr 73
State 1-Hr Ozone 39

O3-8hr (ppb) 101
PM2.5 Federal 2006 24-hr 14
Federal 2008 8-Hr Ozone 67

PM 10 (µg/m³) 143
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 39

PM 2.5 (µg/m³) 52
State 1997 8-Hr Ozone 81
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, August 24, 2016 Page 1 of 1