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 48
51
34
42
45
45
36

Manteca

Tracy-Airport 56
54
37
44
49

Stanislaus

Modesto-14th 52
64
44
39
46
46
41

Turlock 58
74
62
43
52
51
48

Merced

Merced-Coffee 56
64
59
38
47

Madera

Madera-City 59
68
66
37
48
50
55

Madera 56
66
66
38
49
32

Fresno

Fresno-SSP 59
69
66

Clovis 81
69
34
49
52
55

Fresno-Garland 61
71
66
38
48
49
53

Fresno-Drummond 58
68
62
35
45
46
50

Parlier 57
77
78
42
50
51
53

Tranquillity 54
64
58
37
49

Huron

Kings

Hanford 56
67
64
38
47
48
54

Corcoran

Tulare

Visalia, Church 54
64
69
40
42
44
46

Porterville 54
63
65
42
42
42
42

Ash Mountain-SNP 71
85
76
48
38

Lower Kaweah-SNP 64
53
49
39
35

Kern

Shafter 60
70
61
42
46
46
45

Oildale 77
70
49
50
48
50

Bakersfield-Calif 64
80
43
50
50
48
51

Bakersfield-Muni 67
85
76
52
51

Edison 45

Arvin-DiGiorgio 67
80
66
56
51
48
52

Maricopa 62
73
62
50
50
40

Lebec

District Maximum 71
85
78
56
52
52
55

Maximum Measured Value for Unofficial Days Over the Federal and State Standards¹

This Year

Pollutant Maximum

PM10 Federal 24-hr 4
Federal 1-Hr Ozone 1

O3-1hr (ppb) 125
PM10 State 24-hr 132
State 1-Hr Ozone 42

O3-8hr (ppb) 105
PM2.5 Federal 2006 24-hr 30
Federal 2008 8-Hr Ozone 80

PM 10 (µg/m³) 176
PM2.5 Federal 1997 24-hr 12
Federal 1997 8-Hr Ozone 32

PM 2.5 (µg/m³) 98
State 1997 8-Hr Ozone 111
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.
Make one change for clean air! Visit www.healthyairliving.com and become a part of the solution!
Monday, September 29, 2014 Page 1 of 1