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.

08/26

08/27

08/28

08/29

08/30

08/31

09/01

San Joaquin

Stockton-Hazelton

46 (O3-8)

31 (O3-8)

29 (O3-8)

34 (O3-8)

32 (O3-8)

36 (O3-8)

48 (O3-8)

Tracy-Airport

61 (O3-8)

38 (O3-8)

32 (O3-8)

38 (O3-8)

33 (O3-8)

47 (O3-8)

Stanislaus

Modesto-14th

49 (O3-8)

32 (O3-8)

29 (O3-8)

34 (O3-8)

30 (O3-8)

39 (O3-8)

45 (O3-8)

Turlock

77 (O3-8)

48 (O3-8)

36 (O3-8)

40 (O3-8)

37 (O3-8)

47 (O3-8)

67 (O3-8)

Merced

Merced-Coffee

100 (O3-8)

54 (PM25)

42 (PM25)

44 (O3-8)

47 (O3-8)

77 (O3-8)

Madera

Madera

87 (O3-8)

44 (O3-8)

36 (O3-8)

40 (O3-8)

44 (O3-8)

77 (O3-8)

Fresno

Clovis

132 (O3-8)

58 (O3-8)

41 (O3-8)

45 (O3-8)

50 (O3-8)

114 (O3-8)

Fresno-Drummond

111 (O3-8)

48 (O3-8)

37 (O3-8)

41 (O3-8)

47 (O3-8)

101 (O3-8)

Fresno-First

127 (O3-8)

54 (O3-8)

43 (O3-8)

49 (O3-8)

101 (O3-8)

Fresno-SSP

97 (O3-8)

58 (O3-8)

42 (O3-8)

37 (O3-8)

42 (O3-8)

111 (O3-8)

Huron

52 (PM25)

45 (PM25)

36 (PM25)

32 (PM25)

39 (PM25)

Parlier

122 (O3-8)

84 (O3-8)

42 (O3-8)

39 (O3-8)

44 (O3-8)

64 (O3-8)

116 (O3-8)

Tranquillity

97 (O3-8)

46 (O3-8)

33 (O3-8)

36 (O3-8)

41 (O3-8)

43 (O3-8)

71 (O3-8)

Kings

Corcoran

62 (PM25)

52 (PM25)

51 (PM10)

36 (PM25)

42 (PM25)

52 (PM25)

66 (PM25)

Hanford

124 (O3-8)

104 (O3-8)

49 (PM10)

41 (O3-8)

46 (O3-8)

51 (O3-8)

124 (O3-8)

Tulare

Ash Mountain-SNP

135 (O3-8)

132 (O3-8)

46 (O3-8)

40 (O3-8)

49 (O3-8)

84 (O3-8)

114 (O3-8)

Lower Kaweah-SNP

84 (O3-8)

106 (O3-8)

47 (O3-8)

36 (O3-8)

42 (O3-8)

50 (O3-8)

67 (O3-8)

Porterville

132 (O3-8)

106 (O3-8)

45 (O3-8)

38 (O3-8)

48 (O3-8)

74 (O3-8)

114 (O3-8)

Visalia, Church

109 (O3-8)

111 (O3-8)

44 (O3-8)

58 (O3-8)

122 (O3-8)

Kern

Arvin

147 (O3-8)

124 (O3-8)

50 (O3-8)

37 (O3-8)

58 (O3-8)

84 (O3-8)

159 (O3-8)

Bakersfield-Calif

122 (O3-8)

84 (O3-8)

52 (PM10)

24 (PM10)

44 (O3-8)

54 (O3-8)

119 (O3-8)

Edison

145 (O3-8)

111 (O3-8)

47 (O3-8)

35 (O3-8)

48 (O3-8)

61 (O3-8)

135 (O3-8)

Lebec

39 (PM25)

23 (PM25)

19 (PM25)

23 (PM25)

32 (PM25)

36 (PM25)

Maricopa

90 (O3-8)

39 (O3-8)

33 (O3-8)

39 (O3-8)

47 (O3-8)

101 (O3-8)

Oildale

100 (O3-8)

84 (O3-8)

47 (O3-8)

35 (O3-8)

46 (O3-8)

58 (O3-8)

114 (O3-8)

Shafter

114 (O3-8)

61 (O3-8)

44 (O3-8)

34 (O3-8)

43 (O3-8)

49 (O3-8)

106 (O3-8)

Maximum Measured

Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant

Maximum

PM10 Federal 24-hr

Federal 1-Hr Ozone

O3-1hr (ppb)

141

PM10 State 24-hr

State 1-Hr Ozone

O3-8hr (ppb)

110

PM2.5 Federal 2006 24-hr

Federal 2008 8-Hr Ozone

PM 10 (µg/m³)

238

PM2.5 Federal 1997 24-hr

Federal 1997 8-Hr Ozone

PM 2.5 (µg/m³)

State 1997 8-Hr Ozone

¹Some of the days over the standards shown above may be the result of “Natural Events” such as extreme wind

episodes, or “Exceptional Events” such as wildfires and would not count as violations of the federal standard.

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Thursday, September 02, 2010

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