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.

03/13 03/14 03/15 03/16 03/17 03/18 03/19

San Joaquin

Stockton-Hazelton 41 45 50 52 55 58 52

Manteca

Tracy-Airport 47 49 51 56 58 61 52

Stanislaus

Modesto-14th 46 47 52 56 63 61 54

Turlock 42 44 49 55 55 54 49

Merced

Merced-Coffee 46 45 54 56 55 59 53

Madera

Madera-City 44 46 49 53 51 53 53

Madera 46 49 51 57 57 55 58

Fresno

Fresno-SSP 42 45 48 54 52 58 56

Clovis 44 49 52 59 57 62

Fresno-Garland 42 45 47 55 52 57 53

Fresno-Drummond 44 49 50 62 61 63 55

Parlier 46 48 52 56 59 62 57

Tranquillity 46 49 51 56 54 54 55

Huron

Kings

Hanford 46 48 51 60 60 59 55

Corcoran

Tulare

Visalia, Church 44 48 48 55 54 66 54

Porterville 47 46 52 54 58 58 54

Ash Mountain-SNP 40 48 51 53 48 52 53

Lower Kaweah-SNP

Kern

Shafter 48

Oildale 47 46 50 55 53 54 49

Bakersfield-Calif 47 47 55 61 58 60 52

Bakersfield-Muni 44 45 47 56 51 52 47

Edison 48 49 51 64 57 56 54

Arvin-DiGiorgio 47 48 51 61 61 67 53

Maricopa 48 48 52 59 61 63 57

Lebec

District Maximum 48
49
55
64
63
67
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) 67
PM10 State 24-hr 11
State 1-Hr Ozone 0

O3-8hr (ppb) 61
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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Wednesday, March 20, 2019 Page 1 of 1