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.

02/09 02/10 02/11 02/12 02/13 02/14 02/15

San Joaquin

Stockton-Hazelton 35 38 33 30 34 36 36

Manteca

Tracy-Airport 41 45 36 39 45 42 43

Stanislaus

Modesto-14th 37 41 34 32 36 36 37

Turlock 35 39 34 30 35 34 35

Merced

Merced-Coffee 34 39 22 37 38 39 39

Madera

Madera-City 35 39 35 28 32 36 34

Madera 40 43 37 32 37 41 38

Fresno

Fresno-SSP 37 41 36 26 35 38 35

Clovis 39 43 39 29 35 38 36

Fresno-Garland 35 39 35 25 31 35 31

Fresno-Drummond 38 42 36 25 32 37 34

Parlier 39 42 40 27 34 39 36

Tranquillity 38 42 40 26 35 41 38

Huron

Kings

Hanford 38 42 34 23 34 39 36

Corcoran

Tulare

Visalia, Church 36 39 36 26 30 35 33

Porterville 40 41 42 36 31 40 35

Ash Mountain-SNP 38 41 40 39 39 39 41

Lower Kaweah-SNP

Kern

Shafter 43 41 43 30 41 43 39

Oildale 41 38 42 30 43 39 36

Bakersfield-Calif 40 36 40 28 41 40 33

Bakersfield-Muni 38 34 39 23 41 37 31

Edison 42 39 43 29 41 38 40

Arvin-DiGiorgio 42 39 45 28 42 38 40

Maricopa 43 43 46 38 42 45 43

Lebec

District Maximum 43
45
46
39
45
45
43

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) 57
PM10 State 24-hr 10
State 1-Hr Ozone 0

O3-8hr (ppb) 50
PM2.5 Federal 2006 24-hr 10
Federal 2008 8-Hr Ozone 0

PM 10 (µg/m³) 92
PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 53
State 1997 8-Hr Ozone 0
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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Saturday, February 16, 2019 Page 1 of 1