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.

04/29 04/30 05/01 05/02 05/03 05/04 05/05

San Joaquin

Stockton-Hazelton 40
39
49
51
44
43
32

Manteca

Tracy-Airport 48
44
52
62
55
52
37

Stanislaus

Modesto-14th 47
43
50
57
51
50
37

Turlock 50
44
52
62
60
53
41

Merced

Merced-Coffee 49
42
51
55
59
53
41

Madera

Madera-City 52
49
56
60
67
57
43

Madera 52
48
57
58
65
53
41

Fresno

Fresno-SSP 54
51
55
60
67
54
43

Clovis 57
56
58
64
67
57
44

Fresno-Garland 55
53
57
62
65
56
43

Fresno-Drummond 55
55
56
64
66
58
44

Parlier 57
55
56
63
62
58
42

Tranquillity 51
50
54
59
60
56
43

Huron

Kings

Hanford 56
55
59
63
66
57
46

Corcoran

Tulare

Visalia, Church 50
47
46
54
54
53
41

Porterville 59
56
54
61
65
66
46

Ash Mountain-SNP 53
48
51
57
57
67
38

Lower Kaweah-SNP

Kern

Shafter 58
54
53
60
61
52
42

Oildale 49
49
47
50
55
48
39

Bakersfield-Calif 56
55
55
59
65
58
45

Bakersfield-Muni 55
56
53
56
64
59
44

Edison 57
56
53
55
64
63
44

Arvin-DiGiorgio 59
58
54
55
63
67
47

Maricopa 56
53
54
60
63
59
41

Lebec

District Maximum 59
58
59
64
67
67
47

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) 95
PM10 State 24-hr 12
State 1-Hr Ozone 1

O3-8hr (ppb) 81
PM2.5 Federal 2006 24-hr 13
Federal 2008 8-Hr Ozone 2

PM 10 (µg/m³) 83
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 52
State 1997 8-Hr Ozone 4
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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Friday, May 6, 2016 Page 1 of 1