PM10 24 Hour Average (µg/m3)

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

09/14

09/15

09/16

09/17

09/18

09/19

09/20

San Joaquin

Stockton-University

21

21

17

21

29

55

Manteca

46

39

34

22

26

40

69

Tracy-Airport

Stanislaus

Modesto-14th

50

36

35

15

25

38

Turlock

60

46

46

28

34

44

76

Merced

Merced-M St.

62

72

55

28

45

50

53

Merced-Coffee

Madera

Madera-City

68

81

63

35

54

54

70

Madera

Fresno

Fresno-SSP

Clovis

65

73

57

28

41

43

48

Fresno-Garland

69

68

60

32

47

42

51

Fresno-Foundry

Fresno-Pacific

Fresno-Drummond

84

80

68

35

55

54

58

Parlier

Tranquillity

Huron

Kings

Hanford

72

98

79

42

74

67

76

Corcoran

75

88

76

41

64

70

55

Tulare

Visalia-Ashland

71

85

74

38

53

54

67

Porterville

Ash Mountain-SNP

Lower Kaweah-SNP

Kern

Shafter

Oildale

88

90

73

45

53

67

62

Bakersfield-Gold

84

112

75

43

56

74

70

Bakersfield-Calif

78

84

63

39

47

61

57

Bakersfield-Muni

Edison

Arvin-DiGiorgio

Maricopa

Lebec

District Maximum

88

112

79

45

74

74

76

Maximum Measured

Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant

Maximum

Federal 2015 8-Hr Ozone

57

Federal 1997 24-hr PM2.5

0

Federal 2008 8-Hr Ozone

35

Federal 24-hr PM10

0

O3-1hr (ppb)

109

Federal 1997 8-Hr Ozone

9

State 1-Hr Ozone

15

O3-8hr (ppb)

93

Federal 1-Hr Ozone

0

State 1997 8-Hr Ozone

57

PM 10 (µg/m³)

144

Federal 2006 24-hr PM2.5

3

State 24-hr PM10

108

PM 2.5 (µg/m³)

40.6

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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Thursday, September 21, 2023

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