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.

11/14
11/15
11/16
11/17
11/18
11/19
11/20

San Joaquin

Stockton-Hazelton 30 (O3-8) 53 (PM25) 22 (O3-8) 4 (CO) 53 (PM25) 66 (PM25) 89 (PM25)

Manteca 17 (PM25) 42 (PM25) 21 (PM25) 17 (PM25) 29 (PM25) 62 (PM25) 105 (PM25)

Tracy-Airport 38 (O3-8) 26 (O3-8) 30 (O3-8) 35 (O3-8) 28 (O3-8) 42 (PM25) 76 (PM25)

Stanislaus

Modesto-14th 34 (O3-8) 55 (PM25) 33 (PM25) 33 (O3-8) 29 (PM25) 72 (PM25) 112 (PM25)

Turlock 32 (O3-8) 62 (PM25) 38 (PM25) 17 (PM25) 46 (PM25) 85 (PM25) 115 (PM25)

Merced

Merced-Coffee 33 (PM25) 64 (PM25) 29 (PM25) 30 (O3-8) 23 (O3-8) 23 (O3-8) 99 (PM25)

Madera

Madera-City 33 (PM25) 57 (PM25) 102 (O3-1) 35 (O3-8) 53 (PM25) 66 (PM25) 80 (PM25)

Madera 32 (O3-8) 34 (O3-8) 22 (O3-8) 35 (O3-8) 31 (O3-8) 33 (O3-8) 39 (O3-8)

Fresno

Fresno-SSP 31 (O3-8) 37 (O3-8) 29 (O3-8) 37 (O3-8) 27 (O3-8) 34 (O3-8) 43 (O3-8)

Clovis 46 (PM25) 59 (PM25) 45 (PM10) 32 (O3-8) 57 (PM25) 66 (PM25) 78 (PM25)

Fresno-Garland 55 (PM25) 62 (PM25) 42 (PM10) 36 (O3-8) 59 (PM25) 87 (PM25) 80 (PM25)

Fresno-Drummond 20 (O3-8) 31 (O3-8) 22 (O3-8) 31 (O3-8) 22 (O3-8) 27 (O3-8) 36 (O3-8)

Parlier 32 (O3-8) 36 (O3-8) 27 (O3-8) 39 (O3-8) 33 (O3-8) 38 (O3-8) 41 (O3-8)

Tranquillity 36 (O3-8) 42 (PM25) 42 (PM25) 35 (O3-8) 30 (O3-8) 46 (PM25) 64 (PM25)

Huron 25 (PM25) 33 (PM25) 21 (PM25) 25 (PM25) 25 (PM25) 53 (PM25) 62 (PM25)

Kings

Hanford 64 (PM25) 80 (PM25) 51 (PM10) 37 (O3-8) 59 (PM25) 89 (PM25) 107 (PM25)

Corcoran 85 (PM25) 87 (PM25) 55 (PM10) 25 (PM25) 59 (PM25) 97 (PM25) 99 (PM25)

Tulare

Visalia, Church 57 (PM25) 62 (PM25) 50 (PM10) 34 (O3-8) 70 (PM25) 76 (PM25) 91 (PM25)

Porterville 64 (PM25) 59 (PM25) 42 (PM25) 28 (O3-8) 62 (PM25) 72 (PM25) 76 (PM25)

Ash Mountain-SNP 50 (PM25) 36 (O3-8) 19 (O3-8) 29 (PM25) 33 (PM25) 33 (PM25) 46 (PM25)

Lower Kaweah-SNP 36 (O3-8) 36 (O3-8) 26 (O3-8) 35 (O3-8) 40 (O3-8) 38 (O3-8) 36 (O3-8)

Kern

Shafter

Oildale 63 (PM10) 67 (PM10) 56 (PM10) 31 (PM10) 45 (PM10) 39 (O3-8)

Bakersfield-Calif 70 (PM25) 80 (PM25) 42 (PM25) 31 (O3-8) 59 (PM25) 91 (PM25) 89 (PM25)

Bakersfield-Muni 40 (O3-8) 41 (O3-8) 17 (O3-8) 25 (O3-8) 22 (O3-8) 29 (O3-8) 35 (O3-8)

Edison 43 (O3-8) 45 (O3-8) 25 (O3-8) 28 (O3-8) 31 (O3-8) 37 (O3-8) 44 (O3-8)

Arvin-DiGiorgio 42 (O3-8) 42 (O3-8) 24 (O3-8) 24 (O3-8) 30 (O3-8) 36 (O3-8) 38 (O3-8)

Maricopa 43 (O3-8) 46 (O3-8) 31 (O3-8) 32 (O3-8) 36 (O3-8) 40 (O3-8) 44 (O3-8)

Lebec 55 (PM25) 25 (PM25) 21 (PM25) 17 (PM25) 29 (PM25) 25 (PM25) 17 (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 1

O3-1hr (ppb) 126

PM10 State 24-hr 168
State 1-Hr Ozone 44

O3-8hr (ppb) 99

PM2.5 Federal 2006 24-hr 9
Federal 2008 8-Hr Ozone 92

PM 10 (µg/m³) 152
PM2.5 Federal 1997 24-hr

PM2.5 Federal 1997 24-hr 0
Federal 1997 8-Hr Ozone 27

PM 2.5 (µg/m³) 51

State 1997 8-Hr Ozone 125
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, November 21, 2017 Page 1 of 1