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.

09/22 09/23 09/24 09/25 09/26 09/27 09/28

San Joaquin

Stockton-Hazelton 33
34
49
61
77
61
57

Manteca

Tracy-Airport 41
42
45
92
75
53

Stanislaus

Modesto-14th 37
40
53
69
81
76
80

Turlock 36
38
48
66
77
75
74

Merced

Merced-Coffee 41
45
60
70
70
76
77

Madera

Madera-City 42
45
60
73
69
70
77

Madera 40
45
58
69
70
71
79

Fresno

Fresno-SSP 41
47
57
69
71
76
80

Clovis 41
49
59
66
69
76
81

Fresno-Garland 42
48
57
68
73
79
82

Fresno-Drummond 41
48
58
63
72
73

Parlier 57
62
45
76

Tranquillity 38
44
42
68
67
69
75

Huron

Kings

Hanford 40
51
57
66
70
79

Corcoran

Tulare

Visalia, Church 48
54
62
62
75
73

Porterville 43
52
63
70
83
77

Ash Mountain-SNP 44
50
57
59
61
70
71

Lower Kaweah-SNP 42
46
49
56
59
60
66

Kern

Shafter 40
47
61
64
57
76

Oildale 66
56

Bakersfield-Calif 40
49
64
63
59
79
64

Bakersfield-Muni 41
50
66
64
59
80

Edison 41
49
63
61
58
73
51

Arvin-DiGiorgio 40
53
65
68
59
78
53

Maricopa 42
45
62
69
58
73
62

Lebec

District Maximum 44
53
66
73
92
83
82

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 109
State 1-Hr Ozone 51

O3-8hr (ppb) 101
PM2.5 Federal 2006 24-hr 15
Federal 2008 8-Hr Ozone 85

PM 10 (µg/m³) 152
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 47

PM 2.5 (µg/m³) 52
State 1997 8-Hr Ozone 108
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, September 29, 2016 Page 1 of 1