Daily Report

PM2.5 24 Hour Average (µg/m³)

The information in this report is based on preliminary data and is subject to change.

10/05

10/06

10/07

10/08

10/09

10/10

10/11

San Joaquin

Stockton-University

9.9

8.3

8.7

7.6

7.0

Manteca

10.3

11.2

8.3

8.8

9.2

7.5

8.3

Tracy-Airport

8.3

6.5

7.9

5.9

6.9

8.4

6.8

Stanislaus

Modesto-14th

10.2

11.6

8.1

9.2

8.1

8.6

7.7

Turlock

10.6

11.4

8.4

9.0

9.2

9.0

8.0

Merced

Merced-M St.

12.2

11.6

9.8

12.0

10.1

9.1

7.7

Merced-Vierra

14.2

13.1

10.4

13.7

11.7

9.3

9.4

Madera

Madera-City

12.6

12.7

12.8

12.6

13.4

7.5

8.9

Madera

Fresno

Fresno-SSP

Clovis

12.4

15.1

14.5

15.4

18.3x

11.1

10.8

Fresno-Garland

11.6

14.7

14.8

14.3

18.6x

10.7

12.2

Fresno-Foundry

15.7

20.5

21.0

18.7

22.7x

10.0

12.5

Fresno-Pacific

11.2

14.9

15.3

13.7

15.7x

7.5

8.2

Fresno-Drummond

Parlier

Tranquillity

8.1

4.7

5.7

4.4x

4.7

6.8

Huron

8.9

7.0

7.8

8.5

7.1x

7.2

9.0

Kings

Hanford

18.2

16.5

20.3

15.7x

14.7x

11.7

12.3

Corcoran

14.7

14.0

18.1

19.3x

19.8x

12.7

16.7

Tulare

Visalia-Ashland

13.0

15.0

Porterville

8.2

10.6

12.4

12.7x

9.0x

7.0

8.5

Ash Mountain-SNP

4.2

6.7

6.6

9.0x

5.8

8.3

Kern

Shafter

Oildale

Bakersfield-Gold

13.0

12.8

16.2

15.2x

12.0x

8.0

9.1

Bakersfield-Calif

11.1

12.6

14.1

12.4x

10.0x

6.7

8.1

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

2.9

4.3

6.6

3.1

1.8

3.5

6.2

District Maximum

18.2

20.5

21.0

19.3

22.7

12.7

16.7

Maximum Measured

Value for This Year

Pollutant	Maximum
O3-1hr (ppb)	101
O3-8hr (ppb)	84
PM 10 (µg/m³)	150
PM 2.5 (µg/m³)	49.5

Unofficial Days Over the Federal and State Standards¹

Federal 2015 8-Hr Ozone	53	Federal 1997 24-Hr PM2.5	0
Federal 2008 8-Hr Ozone	29	Federal 24-Hr PM10	0
Federal 1997 8-Hr Ozone	0	State 1-Hr Ozone	15
Federal 1-Hr Ozone	0	State 2005 8-Hr Ozone	53
Federal 2006 24-Hr PM2.5	14	State 24-Hr PM10	131

¹Data affected by smoke, high winds, fireworks, 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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Monday, October 12, 2026

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