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 2019


CO Averages

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

JAN-13 0.9 2.898
JAN-08 0.8 1.567
DEC-31 0.7 0.475
JAN-12 0.6 0.344
MAR-24 0.6 0.674
DEC-06 0.6 0.597
DEC-07 0.6 0.629
JAN-07 0.6 0.881
JAN-15 0.6 0.701
NOV-28 0.5 0.579
 
Date
Max 1 Hour Average
 

JAN-13 2.898  
JAN-08 1.567  
JAN-07 0.881  
JAN-21 0.865  
JAN-25 0.861  
JAN-09 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 Average
1 Hour Average

MAR-21 70 75
MAR-23 69 77
SEP-08 66 81
APR-23 65 70
APR-27 64 68
APR-22 63 67
MAY-17 63 65
SEP-07 63 68
MAY-18 61 63
APR-24 60 65
 
Date
Max 1 Hour Average
 

SEP-08 81  
MAR-23 77  
MAR-21 75  
MAY-15 72  
APR-23 70  
MAY-24 70  
APR-27 68  
MAY-07 68  
JUN-27 68  
SEP-07 68  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/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  
* = 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 2019.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
MAY-17 1.920 14.060
APR-06 1.830 11.855
OCT-14 1.800 16.807
FEB-06 1.570 8.445
OCT-15 1.520 3.559
MAR-30 1.410 4.327
MAY-19 1.390 7.196
MAY-20 1.330 5.928
FEB-07 1.210 2.916
MAY-29 1.190 3.412

Date
Max 1 Hour Average
 
OCT-14 16.807  
MAY-17 14.060  
APR-06 11.855  
FEB-06 8.445  
MAY-19 7.196  
MAY-20 5.928  
JUL-27 5.710  
APR-07 5.472  
JUL-18 5.090  
OCT-30 5.052  
* = Value Not Available

Federal Air Quality Standard
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