AQI by Site

AQI is based on measured data at each site. Some sites measure only ozone or only PM-2.5. In summer only those sites

with ozone measurements estimate the AQI correctly, and in winter only those sites with PM-2.5 measurements estimate the

AQI correctly. The information in this report is based on preliminary data and is subject to change. The real-time PM-

10/PM-2.5 monitoring eqiupment is used for air quality forecasting and trend analysis.

06/18
06/19
06/20
06/21
06/22
06/23
06/24

San Joaquin

Stockton-Hazelton 49 (O3-8) 40 (O3-8) 38 (O3-8) 40 (O3-8) 41 (O3-8) 49 (O3-8) 41 (O3-8)

Manteca

Tracy-Airport 67 (O3-8) 74 (O3-8) 46 (O3-8) 44 (O3-8) 41 (O3-8) 51 (O3-8) 47 (O3-8)

Stanislaus

Modesto-14th 84 (O3-8) 27 (PM10) 46 (O3-8) 44 (O3-8) 44 (O3-8) 54 (O3-8) 61 (O3-8)

Turlock 97 (O3-8) 77 (O3-8) 47 (O3-8) 44 (O3-8) 44 (O3-8) 49 (O3-8) 74 (O3-8)

Merced

Merced-Coffee 90 (O3-8) 87 (O3-8) 54 (O3-8) 47 (O3-8) 50 (O3-8) 58 (O3-8) 74 (O3-8)

Madera

Madera-City 87 (O3-8) 100 (O3-8) 54 (O3-8) 51 (O3-8) 64 (O3-8) 74 (O3-8) 84 (O3-8)

Madera 80 (O3-8) 90 (O3-8) 58 (O3-8) 50 (O3-8) 61 (O3-8) 77 (O3-8) 77 (O3-8)

Fresno

Fresno-SSP 71 (O3-8) 87 (O3-8) 51 (O3-8) 47 (O3-8) 54 (O3-8) 71 (O3-8) 71 (O3-8)

Clovis 108 (O3-8) 112 (O3-8) 67 (O3-8) 50 (O3-8) 61 (O3-8) 105 (O3-8) 87 (O3-8)

Fresno-Garland 80 (O3-8) 108 (O3-8) 58 (O3-8) 51 (O3-8) 58 (O3-8) 93 (O3-8) 90 (O3-8)

Fresno-Drummond 84 (O3-8) 108 (O3-8) 61 (O3-8) 51 (O3-8) 64 (O3-8) 84 (O3-8) 93 (O3-8)

Parlier 108 (O3-8) 119 (O3-8) 87 (O3-8) 67 (O3-8) 58 (O3-8) 97 (O3-8) 112 (O3-8)

Tranquillity 90 (O3-8) 87 (O3-8) 42 (O3-8) 44 (O3-8) 48 (O3-8) 67 (O3-8) 71 (O3-8)

Huron 38 (PM25) 38 (PM25) 25 (PM25) 21 (PM25) 21 (PM25) 25 (PM25) 29 (PM25)

Kings

Hanford 87 (O3-8) 90 (O3-8) 77 (O3-8) 51 (O3-8) 58 (O3-8) 90 (O3-8) 84 (O3-8)

Corcoran

Tulare

Visalia, Church 97 (O3-8) 122 (O3-8) 93 (O3-8) 67 (O3-8) 58 (O3-8) 100 (O3-8) 105 (O3-8)

Porterville 97 (O3-8) 108 (O3-8) 61 (O3-8) 51 (O3-8) 54 (O3-8) 74 (O3-8) 90 (O3-8)

Ash Mountain-SNP 115 (O3-8) 143 (O3-8) 101 (O3-8) 71 (O3-8) 67 (O3-8) 87 (O3-8) 101 (O3-8)

Lower Kaweah-SNP

Kern

Shafter 100 (O3-8) 77 (O3-8) 44 (O3-8) 48 (O3-8) 54 (O3-8) 80 (O3-8) 87 (O3-8)

Oildale 105 (O3-8) 101 (O3-8) 49 (O3-8) 51 (O3-8) 67 (O3-8) 77 (O3-8) 80 (O3-8)

Bakersfield-Calif 136 (O3-8) 133 (O3-8) 74 (O3-8) 71 (O3-8) 93 (O3-8) 105 (O3-8) 108 (O3-8)

Bakersfield-Muni 108 (O3-8) 101 (O3-8) 46 (O3-8) 51 (O3-8) 67 (O3-8) 74 (O3-8) 80 (O3-8)

Edison 129 (O3-8) 140 (O3-8) 74 (O3-8) 61 (O3-8) 80 (O3-8) 93 (O3-8) 100 (O3-8)

Arvin-DiGiorgio 115 (O3-8) N/A ()

Maricopa 115 (O3-8) 112 (O3-8) 71 (O3-8) 61 (O3-8) 71 (O3-8) 87 (O3-8) 93 (O3-8)

Lebec 42 (PM25) 38 (PM25) 29 (PM25) 29 (PM25) 29 (PM25) 25 (PM25) 29 (PM25)

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) 102

PM10 State 24-hr 23
State 1-Hr Ozone 3

O3-8hr (ppb) 85

PM2.5 Federal 2006 24-hr 10
Federal 2008 8-Hr Ozone 11

PM 10 (µg/m³) 99
PM2.5 Federal 1997 24-hr

PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 1

PM 2.5 (µg/m³) 53

State 1997 8-Hr Ozone 23
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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Tuesday, June 25, 2019 Page 1 of 1