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.

04/11 04/12 04/13 04/14 04/15 04/16 04/17

San Joaquin

Stockton-Hazelton 35 41 43 37 42 36 40

Manteca

Tracy-Airport 43 48 50 53 42 47

Stanislaus

Modesto-14th 42 47 49 43 53 42 48

Turlock 43 46 52 47 53 42 48

Merced

Merced-Coffee 45 46 53 53 54 43 45

Madera

Madera-City 40 39 50 48 48

Madera 43 44 54 53 55 41 45

Fresno

Fresno-SSP 41 40 52 49 51 38 45

Clovis 45 47 62 56 56 40 51

Fresno-Garland 41 41 55 52 52 37 46

Fresno-Drummond 47 48 61 59 58 42 52

Parlier 44 48 56 57 54 41 50

Tranquillity 47 45 53 52 56 42 47

Huron

Kings

Hanford 44 50 55 57 55 41 49

Corcoran

Tulare

Visalia, Church 39 43 54 55 51 39 50

Porterville 40 45 53 55 52 44 50

Ash Mountain-SNP 44 40 49 54 48 37 39

Lower Kaweah-SNP

Kern

Shafter 46 48 58 58 55 42 53

Oildale 45 45 53 54 51 42 52

Bakersfield-Calif 45 46 56 56 51 43 54

Bakersfield-Muni 41 41 50 50 47 39 50

Edison 47 47 58 60 55 47 58

Arvin-DiGiorgio 47 49 48

Maricopa 49 48 59 62 55 44 54

Lebec

District Maximum 49
50
62
62
58
47
58

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) 70
PM10 State 24-hr 12
State 1-Hr Ozone 0

O3-8hr (ppb) 62
PM2.5 Federal 2006 24-hr 10
Federal 2008 8-Hr Ozone 0

PM 10 (µg/m³) 99
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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Thursday, April 18, 2019 Page 1 of 1