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.

02/11 02/12 02/13 02/14 02/15 02/16 02/17

San Joaquin

Stockton-Hazelton 33 31 33 35 35 31 52

Manteca

Tracy-Airport 39 36 36 42 39 39 47

Stanislaus

Modesto-14th 37 35 44 42 40 54

Turlock 33 33 31 40 37 35 47

Merced

Merced-Coffee 35 37

Madera

Madera-City 46 37 40 42 43 45 60

Madera 45 37 40 41 42 45 57

Fresno

Fresno-SSP 43 44 46 48 62

Clovis 45 36 40 40 40 45 58

Fresno-Garland 45 37 41 41 40 47

Fresno-Drummond 42 36 36 37 35 41 55

Parlier 49 39 42 47 41 50 62

Tranquillity 42 37 41 43 43 41 55

Huron

Kings

Hanford 44 34 50 44 48 57

Corcoran

Tulare

Visalia, Church 50 33 41 46 43 49 58

Porterville 39 31 36 36 26 44 53

Ash Mountain-SNP 48 37 44 51 50 55 61

Lower Kaweah-SNP 49 40 42 48 47 51 51

Kern

Shafter 46 40 42 43 45 49 58

Oildale 51 44 44 59 47 53 64

Bakersfield-Calif 50 45 62 49 57

Bakersfield-Muni 47 42 40 58 47 52 63

Edison 48 44 48 48 54 62

Arvin-DiGiorgio 46 44 42 47 48 54 59

Maricopa 46 43 42 48 47 54 59

Lebec

District Maximum 51
45
44
62
50
57
64

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximum

PM10 Federal 24-hr 2
Federal 1-Hr Ozone 0

O3-1hr (ppb) 72
PM10 State 24-hr 25
State 1-Hr Ozone 0

O3-8hr (ppb) 65
PM2.5 Federal 2006 24-hr 16
Federal 2008 8-Hr Ozone 0

PM 10 (µg/m³) 178
PM2.5 Federal 1997 24-hr 4
Federal 1997 8-Hr Ozone 0

PM 2.5 (µg/m³) 103
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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Sunday, February 18, 2018 Page 1 of 1