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.

11/15 11/16 11/17 11/18 11/19 11/20 11/21

San Joaquin

Stockton-Hazelton 26
28
18
24
17
11
22

Manteca

Tracy-Airport 37
40
32
15
20
30

Stanislaus

Modesto-14th 31
30
18
23
22
11
28

Turlock 32
28
22
23
29
16
29

Merced

Merced-Coffee 33
17
24

Madera

Madera-City 37
22
21
24
19
20

Madera 37
25
31
22
20

Fresno

Fresno-SSP 38
22
25
24
20
19
23

Clovis 38
22
27
25
16
19

Fresno-Garland 37
20
22
20
13
20

Fresno-Drummond 24
18
12
17

Parlier 40
32
28
31
30
19
24

Tranquillity 39
34
35
31
33
25
31

Huron

Kings

Hanford 39
29
25
14
25

Corcoran

Tulare

Visalia, Church 29
29
12
22
10
14

Porterville 31
32
28
32
29
20
23

Ash Mountain-SNP 37
37
40
40
40
37
29

Lower Kaweah-SNP 35
48
46
38
41
27

Kern

Shafter 37
34
29
24
27
30
22

Oildale 35
37
29
21
27
31
25

Bakersfield-Calif 36
38
28
15
25
31
25

Bakersfield-Muni 38
24
26
22

Edison 33
39
23
20
21

Arvin-DiGiorgio 36
40
31
22
29
31
24

Maricopa 43
41
37
35
37
37
33

Lebec

District Maximum 43
48
46
40
41
37
33

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 5
Federal 1-Hr Ozone 0

O3-1hr (ppb) 123
PM10 State 24-hr 169
State 1-Hr Ozone 48

O3-8hr (ppb) 105
PM2.5 Federal 2006 24-hr 39
Federal 2008 8-Hr Ozone 91

PM 10 (µg/m³) 180
PM2.5 Federal 1997 24-hr 17
Federal 1997 8-Hr Ozone 37

PM 2.5 (µg/m³) 98
State 1997 8-Hr Ozone 127
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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Saturday, November 22, 2014 Page 1 of 1