Daily Report

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.

04/19

04/20

04/21

04/22

04/23

04/24

04/25

San Joaquin

Stockton-Hazelton

36 (O3-8)

42 (PM25)

53 (PM25)

55 (PM25)

57 (PM25)

64 (PM25)

53 (PM25)

Manteca

21 (PM25)

25 (PM25)

33 (PM25)

42 (PM25)

46 (PM25)

55 (PM25)

46 (PM25)

Tracy-Airport

41 (O3-8)

44 (O3-8)

46 (O3-8)

54 (O3-8)

53 (PM25)

Stanislaus

Modesto-14th

43 (O3-8)

40 (O3-8)

50 (O3-8)

54 (O3-8)

71 (O3-8)

74 (O3-8)

58 (O3-8)

Turlock

25 (PM25)

42 (O3-8)

51 (O3-8)

50 (PM25)

53 (PM25)

80 (O3-8)

61 (O3-8)

Merced

Merced-Coffee

39 (O3-8)

38 (PM25)

43 (O3-8)

42 (O3-8)

47 (O3-8)

53 (PM25)

50 (PM25)

Madera

Madera-City

44 (O3-8)

48 (O3-8)

54 (O3-8)

74 (O3-8)

90 (O3-8)

67 (O3-8)

Madera

43 (O3-8)

44 (O3-8)

48 (O3-8)

51 (O3-8)

77 (O3-8)

90 (O3-8)

64 (O3-8)

Fresno

Fresno-SSP

46 (O3-8)

51 (O3-8)

58 (O3-8)

77 (O3-8)

90 (O3-8)

100 (O3-8)

90 (O3-8)

Clovis

43 (O3-8)

45 (O3-8)

48 (O3-8)

61 (O3-8)

67 (O3-8)

80 (O3-8)

97 (O3-8)

Fresno-Garland

44 (O3-8)

45 (O3-8)

54 (O3-8)

74 (O3-8)

84 (O3-8)

97 (O3-8)

87 (O3-8)

Fresno-Drummond

44 (O3-8)

50 (O3-8)

64 (O3-8)

71 (O3-8)

90 (O3-8)

105 (O3-8)

87 (O3-8)

Parlier

44 (O3-8)

51 (O3-8)

67 (O3-8)

80 (O3-8)

93 (O3-8)

100 (O3-8)

105 (O3-8)

Tranquillity

44 (O3-8)

50 (O3-8)

61 (O3-8)

80 (O3-8)

87 (O3-8)

Huron

13 (PM25)

21 (PM25)

25 (PM25)

29 (PM25)

33 (PM25)

42 (PM25)

46 (PM25)

Kings

Hanford

44 (O3-8)

48 (O3-8)

67 (O3-8)

64 (O3-8)

80 (O3-8)

93 (O3-8)

90 (O3-8)

Corcoran

21 (PM25)

38 (PM25)

53 (PM25)

50 (PM25)

46 (PM25)

50 (PM25)

Tulare

Visalia, Church

44 (O3-8)

54 (O3-8)

67 (O3-8)

71 (O3-8)

77 (O3-8)

87 (O3-8)

90 (O3-8)

Porterville

44 (O3-8)

47 (O3-8)

58 (O3-8)

59 (PM25)

77 (O3-8)

87 (O3-8)

Ash Mountain-SNP

46 (PM25)

50 (PM25)

47 (O3-8)

64 (O3-8)

74 (O3-8)

77 (O3-8)

87 (O3-8)

Lower Kaweah-SNP

43 (O3-8)

40 (O3-8)

49 (O3-8)

51 (O3-8)

61 (O3-8)

64 (O3-8)

87 (O3-8)

Kern

Shafter

45 (O3-8)

46 (O3-8)

71 (O3-8)

64 (O3-8)

61 (O3-8)

87 (O3-8)

84 (O3-8)

Oildale

48 (O3-8)

51 (O3-8)

77 (O3-8)

87 (O3-8)

77 (O3-8)

97 (O3-8)

108 (O3-8)

Bakersfield-Calif

47 (O3-8)

54 (O3-8)

84 (O3-8)

77 (O3-8)

97 (O3-8)

112 (O3-8)

Bakersfield-Muni

46 (O3-8)

54 (O3-8)

84 (O3-8)

80 (O3-8)

97 (O3-8)

112 (O3-8)

Edison

45 (O3-8)

58 (O3-8)

77 (O3-8)

90 (O3-8)

80 (O3-8)

97 (O3-8)

108 (O3-8)

Arvin-DiGiorgio

45 (O3-8)

58 (O3-8)

71 (O3-8)

84 (O3-8)

77 (O3-8)

101 (O3-8)

122 (O3-8)

Maricopa

47 (O3-8)

48 (O3-8)

80 (O3-8)

84 (O3-8)

77 (O3-8)

97 (O3-8)

108 (O3-8)

Lebec

21 (PM25)

25 (PM25)

33 (PM25)

38 (PM25)

33 (PM25)

38 (PM25)

42 (PM25)

Maximum Measured

Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant

Maximu

PM10 Federal 24-hr

Federal 1-Hr

O3-1hr (ppb)

PM10 State 24-hr

State 1-Hr Ozone

O3-8hr (ppb)

PM2.5 Federal 2006 24-hr

Federal 2008 8-Hr

PM 10

178

PM2.5 Federal 1997 24-hr

Federal 1997 8-Hr

PM 2.5

103

State 1997 8-Hr Ozone

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, April 26, 2018

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