Highest Readings by Year
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Air Quality Monitoring

Highest Readings by Year
Air Resource Management
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 2017


CO Averages

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

NOV-18 0.6 0.590
DEC-31 0.6 0.606
NOV-19 0.5 1.061
NOV-17 0.5 0.452
DEC-15 0.5 0.406
DEC-16 0.5 0.530
JAN-19 0.4 0.513
MAR-17 0.4 0.518
MAR-18 0.4 0.502
JAN-18 0.4 0.403
 
Date
Max 1 Hour Average
 

NOV-19 1.061  
DEC-12 0.742  
SEP-15 0.642  
DEC-31 0.606  
NOV-18 0.590  
FEB-20 0.571  
DEC-02 0.546  
JUL-25 0.542  
DEC-16 0.530  
NOV-05 0.519  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2017.

Ozone Averages

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

MAY-11 79 92
MAY-09 76 87
MAY-10 75 81
APR-09 68 73
MAR-21 67 77
MAY-08 67 75
MAY-27 66 73
MAY-26 65 75
MAY-14 64 67
MAR-18 63 70
 
Date
Max 1 Hour Average
 

MAY-11 92  
MAY-09 87  
MAY-10 81  
MAR-21 77  
MAY-08 75  
MAY-15 75  
MAY-26 75  
APR-09 73  
MAY-27 73  
JUN-09 72  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
MAY-30 32  
MAY-20 21.4  
MAY-29 20.5  
JUL-26 20.2  
APR-05 18.6  
AUG-04 18.3  
AUG-05 18.3  
DEC-16 16.4  
OCT-23 16.2  
OCT-22 16.1  
* = Value Not Available

PM 10 Averages

PM 10 data below are shown in Micrograms Per Cubic Meter (μg/m3)
This site did not monitor PM 10 during 2017.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
FEB-21 1.190 4.979
MAR-16 1.050 3.513
APR-30 1.030 2.677
JUN-18 0.990 3.412
DEC-05 0.990 5.048
MAR-12 0.960 4.824
NOV-16 0.930 4.093
APR-02 0.910 5.867
APR-28 0.880 5.127
APR-17 0.850 3.646

Date
Max 1 Hour Average
 
AUG-05 9.476  
JUL-10 7.115  
SEP-04 6.641  
MAR-18 6.577  
JUN-27 5.954  
APR-02 5.867  
JUN-24 5.675  
JAN-18 5.509  
APR-28 5.127  
DEC-05 5.048  
* = Value Not Available

Federal Air Quality Standard
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