Daily Report

AQI by Site

AQI is determined using real-time data measured at each site. AQI is based on the pollutant that measured highest.

Factors such as site capabilities, seasonality, wildfire or wind events, and/or technical difficulties influence which

pollutant is used to determine AQI. The data in this report is preliminary and subject to change.

04/11

04/12

04/13

04/14

04/15

04/16

04/17

San Joaquin

Stockton-University

51 (PM25)

37 (O3-8)

48 (O3-8)

41 (O3-8)

37 (O3-8)

38 (PM25)

46 (PM25)

Manteca

35 (PM25)

25 (PM25)

10 (PM25)

11 (PM25)

14 (PM25)

28 (PM25)

40 (PM25)

Tracy-Airport

40 (O3-8)

30 (O3-8)

44 (O3-8)

35 (O3-8)

9 (PM25)

32 (O3-8)

31 (O3-8)

Stanislaus

Modesto-14th

54 (O3-8)

43 (O3-8)

58 (O3-8)

43 (O3-8)

42 (O3-8)

44 (O3-8)

45 (PM25)

Turlock

71 (O3-8)

36 (O3-8)

61 (O3-8)

44 (O3-8)

42 (O3-8)

45 (O3-8)

47 (PM25)

Merced

Merced-M St.

34 (PM25)

24 (PM25)

9 (PM10)

4 (PM25)

15 (PM25)

25 (PM25)

30 (PM25)

Merced-Vierra

48 (O3-8)

38 (O3-8)

54 (O3-8)

43 (O3-8)

42 (O3-8)

Madera

Madera-City

58 (O3-8)

44 (O3-8)

64 (O3-8)

44 (O3-8)

42 (O3-8)

46 (O3-8)

Madera

61 (O3-8)

46 (O3-8)

61 (O3-8)

43 (O3-8)

45 (O3-8)

Fresno

Fresno-SSP

44 (O3-8)

58 (O3-8)

41 (O3-8)

43 (O3-8)

40 (O3-8)

46 (O3-8)

Clovis

97 (O3-8)

47 (O3-8)

58 (O3-8)

41 (O3-8)

44 (O3-8)

40 (O3-8)

46 (O3-8)

Fresno-Garland

54 (PM25)

45 (PM25)

46 (O3-8)

36 (O3-8)

39 (O3-8)

36 (O3-8)

48 (PM25)

Fresno-Foundry

60 (PM25)

62 (PM25)

23 (PM25)

18 (PM25)

28 (PM25)

42 (PM25)

64 (PM25)

Fresno-Pacific

60 (PM25)

55 (PM25)

20 (PM25)

19 (PM25)

20 (PM25)

33 (PM25)

59 (PM25)

Fresno-Drummond

77 (O3-8)

51 (PM10)

61 (O3-8)

43 (O3-8)

44 (O3-8)

48 (O3-8)

Parlier

77 (O3-8)

51 (O3-8)

61 (O3-8)

44 (O3-8)

46 (O3-8)

58 (O3-8)

Tranquillity

45 (O3-8)

37 (O3-8)

45 (O3-8)

41 (O3-8)

37 (O3-8)

39 (O3-8)

Huron

33 (PM25)

34 (PM25)

27 (PM25)

14 (PM25)

23 (PM25)

31 (PM25)

33 (PM25)

Kings

Hanford

87 (O3-8)

59 (PM25)

50 (O3-8)

45 (O3-8)

47 (O3-8)

46 (O3-8)

67 (PM25)

Corcoran

60 (PM25)

52 (PM25)

23 (PM25)

12 (PM25)

22 (PM25)

43 (PM25)

60 (PM25)

Tulare

Visalia-Ashland

84 (O3-8)

53 (PM25)

45 (O3-8)

43 (O3-8)

45 (O3-8)

48 (O3-8)

67 (PM25)

Porterville

87 (O3-8)

54 (PM25)

50 (O3-8)

44 (O3-8)

46 (PM25)

56 (PM25)

79 (PM25)

Ash Mountain-SNP

43 (O3-8)

54 (O3-8)

44 (O3-8)

41 (O3-8)

37 (O3-8)

31 (O3-8)

49 (PM25)

Lower Kaweah-SNP

46 (O3-8)

71 (O3-8)

74 (O3-8)

71 (O3-8)

50 (O3-8)

67 (O3-8)

43 (O3-8)

Kern

Shafter

47 (O3-8)

58 (O3-8)

44 (O3-8)

46 (O3-8)

51 (O3-8)

64 (O3-8)

Oildale

90 (O3-8)

71 (O3-8)

61 (O3-8)

44 (O3-8)

46 (O3-8)

54 (O3-8)

80 (O3-8)

Bakersfield-Gold

55 (PM25)

63 (PM25)

Bakersfield-Calif

97 (O3-8)

67 (O3-8)

51 (O3-8)

43 (O3-8)

46 (O3-8)

54 (O3-8)

67 (O3-8)

Bakersfield-Muni

90 (O3-8)

64 (O3-8)

49 (O3-8)

42 (O3-8)

44 (O3-8)

49 (O3-8)

67 (O3-8)

Edison

101 (O3-8)

71 (O3-8)

51 (O3-8)

43 (O3-8)

46 (O3-8)

93 (O3-8)

Arvin-DiGiorgio

71 (O3-8)

61 (O3-8)

40 (O3-8)

48 (O3-8)

67 (O3-8)

90 (O3-8)

Maricopa

87 (O3-8)

80 (O3-8)

54 (O3-8)

36 (O3-8)

48 (O3-8)

67 (O3-8)

Lebec

34 (PM25)

27 (PM25)

13 (PM25)

9 (PM25)

13 (PM25)

31 (PM25)

47 (PM25)

Maximum Measured

Unofficial Days Over the Federal and State Standards¹

Value for This Year

Pollutant

Maximum

Federal 2015 8-Hr Ozone

Federal 1997 24-hr PM2.5

O3-1hr (ppb)

Federal 2008 8-Hr Ozone

Federal 24-hr PM10

O3-8hr (ppb)

Federal 1997 8-Hr Ozone

State 1-Hr Ozone

PM 10 (µg/m³)

Federal 1-Hr Ozone

State 1997 8-Hr Ozone

PM 2.5 (µg/m³)

32.2

Federal 2006 24-hr PM2.5

State 24-hr PM10

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 18, 2024

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