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.

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

San Joaquin

Stockton-Hazelton 8.5 4.4 5.7 6.4 5.0 8.5 8.8

Manteca

Tracy-Airport 7.7 6.9 5.0 4.0 4.2 5.0 6.0

Stanislaus

Modesto-14th 7.7 5.5 3.6 5.0 4.2 5.0 6.3

Turlock 11.0 8.3 6.7 8.3 7.9 6.2 8.6

Merced

Merced-Coffee 9.0 6.7 5.7 7.7 6.7 6.9 6.5

Madera

Madera-City 11.0 10.8 6.2 9.0 8.5 8.5 10.1

Madera

Fresno

Fresno-SSP

Clovis

Fresno-Garland 13.0 10.9 6.0 8.4 8.5 8.5 8.4

Fresno-Drummond

Parlier

Tranquillity 9.5 8.0 4.5 4.0 5.7 5.7 7.0

Huron 9.0 8.8 6.0 5.0 5.2 5.5 6.7

Kings

Hanford 12.5 10.5 8.9 7.2 7.5 10.3 8.8

Corcoran

Tulare

Visalia, Church 13.5 15.4 11.0 8.5 9.0 10.4 12.4

Porterville 16.0 14.8 7.9 9.5 10.5 8.5 11.3

Ash Mountain-SNP 10.8 16.8 17.6 16.0 15.5 13.0 12.7

Lower Kaweah-SNP

Kern

Shafter

Oildale

Bakersfield-Calif 12.0 11.5 6.4 6.2 7.5 8.5 8.3

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec 9.5 8.5 7.4 7.0 7.0 5.5 6.6

District Maximum 16.0
16.8
17.6
16.0
15.5
13.0
12.7

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 0
Federal 1997 8-Hr Ozone 1

PM 2.5 (µg/m³) 53.0
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