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 2018


CO Averages

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

AUG-06 0.7 0.950
DEC-24 0.6 0.497
OCT-30 0.6 1.366
DEC-25 0.6 0.767
DEC-31 0.5 0.658
AUG-15 0.5 0.549
FEB-08 0.5 0.530
OCT-20 0.5 1.199
DEC-07 0.5 0.578
NOV-29 0.4 0.552
 
Date
Max 1 Hour Average
 

OCT-30 1.366  
OCT-20 1.199  
SEP-27 1.073  
AUG-06 0.950  
DEC-25 0.767  
JAN-01 0.765  
NOV-25 0.700  
SEP-26 0.688  
DEC-31 0.658  
OCT-10 0.627  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2018.

Ozone Averages

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

APR-18 70 78
MAY-10 70 78
MAR-24 67 72
APR-05 64 74
APR-24 64 69
APR-29 64 69
APR-17 63 69
MAR-16 62 66
MAY-09 62 67
APR-30 61 63
 
Date
Max 1 Hour Average
 

APR-18 78  
MAY-10 78  
APR-05 74  
MAR-24 72  
APR-17 69  
APR-24 69  
APR-29 69  
JUN-19 69  
MAR-15 67  
MAY-09 67  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
JAN-01 24.8  
MAR-16 22.1  
JAN-19 22  
JAN-18 21.2  
APR-06 19.5  
DEC-06 17.3  
JAN-20 17  
AUG-09 16.4  
MAR-15 15.6  
MAR-17 15.5  
* = 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 2018.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
FEB-06 4.010 36.774
AUG-17 2.090 11.483
JAN-20 2.020 6.879
MAR-24 1.830 16.927
AUG-15 1.580 19.053
DEC-01 1.400 4.912
AUG-20 1.200 4.815
MAR-17 1.140 6.482
JAN-19 1.130 3.722
SEP-28 1.110 4.597

Date
Max 1 Hour Average
 
FEB-06 36.774  
AUG-15 19.053  
MAR-24 16.927  
MAR-10 12.158  
AUG-17 11.483  
FEB-15 9.447  
MAR-11 8.891  
JUL-15 8.562  
JUN-19 7.846  
JUL-06 6.901  
* = Value Not Available

Federal Air Quality Standard
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