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.

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

San Joaquin

Stockton-Hazelton 33 (PM25) 29 (PM25) 50 (PM25) 57 (PM25) 33 (PM25) 68 (PM25) 72 (PM25)

Manteca 21 (PM25) 25 (PM25) 21 (PM25) 29 (PM25) 17 (PM25) 46 (PM25) 64 (PM25)

Tracy-Airport 33 (O3-8) 31 (O3-8) 30 (O3-8) 37 (O3-8) 33 (O3-8) 33 (O3-8) 40 (O3-8)

Stanislaus

Modesto-14th 31 (O3-8) 31 (O3-8) 38 (PM25) 33 (O3-8) 53 (PM25) 76 (PM25)

Turlock 30 (O3-8) 28 (O3-8) 33 (PM25) 38 (PM25) 33 (PM25) 50 (PM25) 78 (PM25)

Merced

Merced-Coffee 30 (O3-8) 33 (PM25) 30 (O3-8)

Madera

Madera-City 39 (PM10) 31 (O3-8) 42 (PM25) 38 (PM25) 38 (PM25) 46 (PM25) 62 (PM25)

Madera 35 (O3-8) 31 (O3-8) 31 (O3-8) 34 (O3-8) 33 (O3-8) 38 (O3-8) 47 (O3-8)

Fresno

Fresno-SSP 34 (O3-8) 37 (O3-8) 36 (O3-8) 40 (O3-8) 51 (O3-8)

Clovis 36 (PM10) 31 (O3-8) 33 (PM25) 33 (O3-8) 31 (O3-8) 50 (PM25) 62 (PM25)

Fresno-Garland 42 (PM25) 33 (PM25) 46 (PM25) 38 (PM25) 42 (PM25) 64 (PM25) 76 (PM25)

Fresno-Drummond 32 (O3-8) 28 (O3-8) 28 (O3-8) 31 (O3-8) 28 (O3-8) 34 (O3-8) 44 (O3-8)

Parlier 40 (O3-8) 32 (O3-8) 34 (O3-8) 37 (O3-8) 35 (O3-8) 44 (O3-8) 54 (O3-8)

Tranquillity 36 (O3-8) 32 (O3-8) 32 (O3-8) 35 (O3-8) 36 (O3-8) 35 (O3-8) 45 (O3-8)

Huron 13 (PM25) 21 (PM25) 25 (PM25) 21 (PM25) 21 (PM25) 21 (PM25) 33 (PM25)

Kings

Hanford 51 (PM10) 55 (PM25) 55 (PM25) 53 (PM25) 35 (O3-8) 55 (PM25) 72 (PM25)

Corcoran 51 (PM10) 33 (PM25) 46 (PM25) 53 (PM25) 38 (PM25) 53 (PM25) 70 (PM25)

Tulare

Visalia, Church 56 (PM10) 42 (PM25) 42 (PM25) 66 (PM25) 59 (PM25) 62 (PM25) 74 (PM25)

Porterville 66 (PM25) 42 (PM25) 38 (PM25) 42 (PM25) 53 (PM25) 59 (PM25) 70 (PM25)

Ash Mountain-SNP 57 (PM25) 38 (PM25) 39 (O3-8) 43 (O3-8) 53 (PM25) 50 (PM25) 53 (PM25)

Lower Kaweah-SNP 42 (O3-8) 33 (O3-8) 39 (O3-8) 43 (O3-8) 42 (O3-8) 42 (O3-8) 43 (O3-8)

Kern

Shafter 36 (O3-8) 33 (O3-8) 34 (O3-8) 32 (O3-8) 37 (O3-8) 41 (O3-8) 48 (O3-8)

Oildale 55 (PM10) 36 (O3-8) 47 (PM10) 44 (PM10) 45 (PM10) 56 (PM10) 58 (O3-8)

Bakersfield-Calif 40 (O3-8) 39 (O3-8) 46 (PM25) 64 (PM25) 55 (PM25) 59 (PM25)

Bakersfield-Muni 36 (O3-8) 36 (O3-8) 35 (O3-8) 41 (O3-8) 38 (O3-8) 43 (O3-8) 50 (O3-8)

Edison 37 (O3-8) 38 (O3-8) 41 (O3-8) 39 (O3-8) 44 (O3-8) 51 (O3-8)

Arvin-DiGiorgio 37 (O3-8) 38 (O3-8) 33 (O3-8) 40 (O3-8) 41 (O3-8) 46 (O3-8) 49 (O3-8)

Maricopa 41 (O3-8) 39 (O3-8) 37 (O3-8) 41 (O3-8) 42 (O3-8) 46 (O3-8) 51 (O3-8)

Lebec 33 (PM25) 21 (PM25) 21 (PM25) 29 (PM25) 33 (PM25) 25 (PM25) 21 (PM25)

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

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