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.

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

San Joaquin

Stockton-Hazelton 39 47 46 42 48 39 43

Manteca

Tracy-Airport 47 54 53 57 44 51

Stanislaus

Modesto-14th 47 52 52 52 57 44 52

Turlock 50 50 56 57 57 44 56

Merced

Merced-Coffee 53 50 58 60 59 46 48

Madera

Madera-City 47 44 52 49 53

Madera 51 48 57 56 59 45 48

Fresno

Fresno-SSP 48 44 57 51 54 42 50

Clovis 50 52 69 59 57 44 57

Fresno-Garland 46 45 59 56 55 41 50

Fresno-Drummond 50 50 62 60 59 44 54

Parlier 48 54 62 64 56 44 55

Tranquillity 51 48 55 53 58 46 51

Huron

Kings

Hanford 50 57 59 59 57 44 51

Corcoran

Tulare

Visalia, Church 42 47 57 59 54 42 53

Porterville 42 48 57 58 58 46 56

Ash Mountain-SNP 45 41 54 58 54 41 42

Lower Kaweah-SNP

Kern

Shafter 47 53 59 61 58 45 57

Oildale 47 48 55 56 54 45 55

Bakersfield-Calif 47 49 59 58 54 45 59

Bakersfield-Muni 44 46 53 52 49 41 56

Edison 49 53 63 63 58 50 67

Arvin-DiGiorgio 51 53 67

Maricopa 51 51 63 63 57 46 57

Lebec

District Maximum 53
57
69
64
59
50
67

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