Ozone One-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 37 19 26 24 35 31

Manteca

Tracy-Airport 42 28 35 40 33 39 30

Stanislaus

Modesto-14th 41 33 28 38 33 39 31

Turlock 39 38 24 19 16 20 36

Merced

Merced-Coffee 38 37 24 34 30 37 35

Madera

Madera-City 42 46 126 40 38 42 49

Madera 41 44 29 41 40 43 52

Fresno

Fresno-SSP 41 47 37 43 37 47 51

Clovis 36 44 38 38 39 43 47

Fresno-Garland 37 45 36 42 37 45 51

Fresno-Drummond 30 44 28 36 34 40 45

Parlier 41 48 35 44 44 50 51

Tranquillity 41 40 26 41 37 43 46

Huron

Kings

Hanford 39 47 33 44 40 45 53

Corcoran

Tulare

Visalia, Church 41 48 30 40 37 45 51

Porterville 41 44 28 33 33 37 44

Ash Mountain-SNP 52 44 25 30 33 41 47

Lower Kaweah-SNP 43 40 29 34 48 46 41

Kern

Shafter

Oildale 55 57 30 32 45 52

Bakersfield-Calif 56 60 33 40 37 49 53

Bakersfield-Muni 53 52 27 34 30 43 48

Edison 58 60 35 32 40 46 55

Arvin-DiGiorgio 54 55 37 29 42 49 50

Maricopa 50 55 36 36 42 50 51

Lebec

District Maximum 58
60
126
44
48
50
55

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