PM25 24 Hour Average (µg/m3)

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.

02/17 02/18 02/19 02/20 02/21 02/22 02/23

San Joaquin

Stockton-Hazelton 22 5 6 6 12 10 6

Manteca 18 8 7 4 8 9 4

Tracy-Airport 7 4 3 4 5 4 4

Stanislaus

Modesto-14th 24 10 4 5 8 12 4

Turlock 25 12 5 8 12 11

Merced

Merced-Coffee 14 11 8 11 11 8 9

Madera

Madera-City 17 10 7 9 11 7 5

Madera

Fresno

Fresno-SSP

Clovis 17 12 5 7 9 7 5

Fresno-Garland 24 13 5 12 16 12 6

Fresno-Drummond

Parlier

Tranquillity 9 6 4 4 4 5 4

Huron 8 6 3 5 5 4 4

Kings

Hanford 22 20 4 9 9 11 5

Corcoran 21 18 4 5 10 4

Tulare

Visalia, Church 23 15 6 10 12 9 7

Porterville 21 19 6 5 9 8 5

Ash Mountain-SNP 13 7

Lower Kaweah-SNP

Kern

Shafter

Oildale

Bakersfield-Calif 7 10 9 6

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec 5 6 2 5 5 4

District Maximum 25
20
8
12
16
12
9

Maximum Measured Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant Maximu

PM10 Federal 24-hr 2
Federal 1-Hr 0

O3-1hr (ppb) 72
PM10 State 24-hr 26
State 1-Hr Ozone 0

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

PM 10 178
PM2.5 Federal 1997 24-hr 4
Federal 1997 8-Hr 0

PM 2.5 103
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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Saturday, February 24, 2018 Page 1 of 1