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 2020


CO Averages

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

JAN-01 0.7 0.812
JAN-07 0.6 0.666
JAN-06 0.5 0.405
DEC-13 0.5 0.525
DEC-12 0.5 0.427
DEC-23 0.4 0.597
MAR-01 0.4 0.543
DEC-26 0.4 0.393
DEC-09 0.4 0.497
DEC-27 0.4 0.490
 
Date
Max 1 Hour Average
 

JAN-01 0.812  
JAN-07 0.666  
DEC-23 0.597  
MAR-01 0.543  
DEC-13 0.525  
DEC-09 0.497  
DEC-27 0.490  
APR-05 0.484  
DEC-10 0.462  
DEC-11 0.449  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2020.

Ozone Averages

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

MAY-02 69 75
APR-03 66 76
MAY-12 66 72
MAY-04 63 68
APR-22 62 71
APR-04 60 70
MAY-03 58 61
JUN-17 58 64
APR-02 57 64
MAY-08 57 59
 
Date
Max 1 Hour Average
 

APR-03 76  
MAY-02 75  
MAY-12 72  
APR-22 71  
APR-04 70  
MAY-04 68  
APR-02 64  
JUN-17 64  
APR-28 63  
JUN-25 63  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
JAN-01 38.4  
JAN-20 23.3  
JUL-03 18.5  
APR-14 18.2  
JUN-27 18  
DEC-11 17.7  
SEP-05 17.3  
APR-13 17.2  
JUL-10 17.1  
DEC-09 17.1  
* = 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 2020.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
AUG-08 1.730 14.960
MAR-20 1.490 6.248
MAR-19 1.420 5.760
OCT-28 1.340 2.741
OCT-09 1.300 2.933
MAR-10 1.270 2.557
JUN-27 1.210 4.090
MAR-18 1.200 6.437
NOV-29 1.190 5.099
JUN-12 1.180 2.573

Date
Max 1 Hour Average
 
AUG-08 14.960  
MAR-18 6.437  
MAR-20 6.248  
MAR-19 5.760  
MAR-28 5.574  
NOV-29 5.099  
JUN-11 5.034  
SEP-27 4.841  
AUG-09 4.317  
JUN-27 4.090  
* = Value Not Available

Federal Air Quality Standard
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