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Air Quality Monitoring

Highest Readings by Year

Air Resource Management
Ad Hoc Reporting

Data on this page are updated daily when complete data are received.

It is important to note that the ozone monitoring data less than three
months old viewed on this website have generally not been verified and
checked for quality assurance in accordance with federal requirements.


More Details about: Sydney
Ad Hoc Reporting

AQS # L057-3002

Sydney

 

10 Highest Daily Averages for Year 2019

 

CO Averages

CO data below are shown in Parts Per Million (PPM)
Date
Max 8 Hour Avg
1 Hour Avg

JAN-13 0.93 2.898
JAN-8 0.83 1.567
DEC-31 0.67 0.475
JAN-12 0.64 0.344
MAR-24 0.61 0.674
DEC-6 0.56 0.597
DEC-7 0.56 0.629
JAN-7 0.55 0.881
JAN-15 0.55 0.701
NOV-28 0.53 0.579
Date
Max 1 Hour Avg

JAN-13 2.898
JAN-8 1.567
JAN-7 0.881
JAN-21 0.865
JAN-25 0.861
JAN-9 0.787
APR-30 0.776
APR-16 0.706
JAN-10 0.705
JAN-15 0.701

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2019

Ozone Averages

Ozone data below are shown in Parts Per Billion (PPB)
Date
Max 8 Hour Avg
1 Hour Avg

MAR-21 70 75
MAR-23 69 77
SEP-8 66 81
APR-23 65 70
APR-27 64 68
APR-22 63 67
MAY-17 63 65
SEP-7 63 68
MAY-18 61 63
APR-24 60 65
Date
Max 1 Hour Avg

SEP-8 81
MAR-23 77
MAR-21 75
MAY-15 72
APR-23 70
MAY-24 70
APR-27 68
MAY-7 68
JUN-27 68
SEP-7 68

 

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (mg/m3)
Date
Daily Average
 

JUN-23 24.8  
JUL-14 22.6  
JUN-25 22.2  
JUN-26 21  
JUN-24 20.3  
JUN-21 20.1  
JUL-15 19.3  
JUL-10 18.6  
JUN-22 18.3  
JAN-15 16.5  

 

PM 10 Averages

PM 10 data below are shown in Micrograms Per Cubic Meter (mg/m3)
This site did not monitor PM 10 during 2019

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Avg
1 Hour Avg

FEB-6 2 8.445
APR-6 2 11.855
MAY-17 2 14.06
OCT-14 2 16.807
OCT-15 2 3.559
JAN-12 1 3.8
JAN-22 1 3.299
JAN-31 1 0.658
FEB-1 1 1.151
FEB-2 1 2.931
Date
Max 1 Hour Avg

OCT-14 16.807
MAY-17 14.06
APR-6 11.855
FEB-6 8.445
MAY-19 7.196
MAY-20 5.928
JUL-27 5.71
APR-7 5.472
JUL-18 5.09
OCT-30 5.052

Federal Air Quality Standard
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Last updated: March 02, 2017

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