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.

03/02 03/03 03/04 03/05 03/06 03/07 03/08

San Joaquin

Stockton-Hazelton 31
28
27
33
39
33
39

Manteca

Tracy-Airport 38
27
33
37
41
41
42

Stanislaus

Modesto-14th 33
29
32
34
42
37
41

Turlock 33
28
32
36
42
36
43

Merced

Merced-Coffee 34
32
38
36
42
31
44

Madera

Madera 33
30
37
38
39
27
46

Madera-City 37
35
39
41
41
34
46

Fresno

Clovis 34
42
38
42
43
49

Fresno-Drummond 34
39
39
39
32
46

Fresno-Garland 32
25
36
33
37
32
44

Fresno-SSP 37
35
29
44
38
34
49

Huron

Parlier 39
37
39
42
41
38
49

Tranquillity 43
42
37
46
42
40
52

Kings

Corcoran

Hanford 33
27
37
41
36
34
46

Tulare

Ash Mountain-SNP 38
35
39
39
45
36
43

Lower Kaweah-SNP 32
28
29

Porterville 37
38
38
42
43
38
47

Visalia, Church 34
31
32
36
35
29
41

Kern

Arvin-DiGiorgio 36
42
39
48
39
45
51

Bakersfield-Calif 31
34
30
43
38
39
50

Bakersfield-Muni 33
36
34
42
36
39
49

Edison 41
41
39
43
42
45
48

Lebec

Maricopa 38
43
36
50
40
44
53

Oildale 29
35
30
38
36
36
44

Shafter 32
37
31
42
40
41
50

District Maximum 43
43
42
50
45
45
53

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 3
Federal 1-Hr Ozone 0

O3-1hr (ppb) 78
PM10 State 24-hr 40
State 1-Hr Ozone 0

O3-8hr (ppb) 69
PM2.5 Federal 2006 24-hr 28
Federal 2008 8-Hr Ozone 0

PM 10 (µg/m³) 176
PM2.5 Federal 1997 24-hr 12
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 98
State 1997 8-Hr Ozone 0
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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Sunday, March 09, 2014 Page 1 of 1