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.

11/14 11/15 11/16 11/17 11/18 11/19 11/20

San Joaquin

Stockton-Hazelton 32 17 24 19 25 26

Manteca

Tracy-Airport 41 28 32 38 30 32 27

Stanislaus

Modesto-14th 37 30 28 36 27 30 27

Turlock 35 31 21 17 13 14 23

Merced

Merced-Coffee 34 30 20 32 25 25 28

Madera

Madera-City 36 39 28 38 29 33 43

Madera 35 37 24 38 33 36 42

Fresno

Fresno-SSP 34 40 31 40 29 37 46

Clovis 30 39 32 35 30 35 41

Fresno-Garland 28 38 30 39 27 35 41

Fresno-Drummond 22 34 24 33 24 29 39

Parlier 35 39 29 42 36 41 44

Tranquillity 39 37 21 38 32 37 40

Huron

Kings

Hanford 34 39 29 40 33 32 43

Corcoran

Tulare

Visalia, Church 34 35 23 37 27 36 41

Porterville 24 40 22 30 28 31 26

Ash Mountain-SNP 49 39 20 28 27 34 40

Lower Kaweah-SNP 39 39 28 38 43 41 39

Kern

Shafter

Oildale 47 49 28 25 39 42

Bakersfield-Calif 48 52 24 34 29 40 43

Bakersfield-Muni 43 44 18 27 24 31 38

Edison 46 49 27 30 33 40 47

Arvin-DiGiorgio 45 45 26 26 32 39 41

Maricopa 46 50 33 35 39 43 47

Lebec

District Maximum 49
52
33
42
43
43
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 1

O3-1hr (ppb) 126
PM10 State 24-hr 168
State 1-Hr Ozone 44

O3-8hr (ppb) 99
PM2.5 Federal 2006 24-hr 9
Federal 2008 8-Hr Ozone 92

PM 10 (µg/m³) 152
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 27

PM 2.5 (µg/m³) 51
State 1997 8-Hr Ozone 125
¹Data affected by smoke, high winds, fireworks, and etc. and which exceeded a federal standard are denoted with
an ‘x’ in the table above. Values marked with an ‘x’ are not included in the tallies above.
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Tuesday, November 21, 2017 Page 1 of 1