Highest Readings by Year
Air Quality Icon

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 2022


CO Averages

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

JAN-30 0.5 0.487
OCT-07 0.5 0.519
JAN-31 0.5 0.552
OCT-08 0.5 0.724
AUG-14 0.5 0.501
MAR-29 0.4 0.482
AUG-13 0.4 0.469
AUG-04 0.4 0.481
JAN-01 0.4 0.532
MAR-28 0.4 0.417
 
Date
Max 1 Hour Average
 

OCT-08 0.724  
JAN-31 0.552  
JUL-20 0.552  
JAN-01 0.532  
FEB-12 0.519  
OCT-07 0.519  
NOV-29 0.517  
AUG-15 0.504  
AUG-14 0.501  
OCT-05 0.492  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2022.

Ozone Averages

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

JUN-22 63 70
MAR-17 61 68
MAR-04 58 64
MAY-29 58 62
MAR-29 57 62
OCT-08 57 62
MAR-02 56 59
MAR-28 56 59
MAR-30 56 61
MAY-28 56 62
 
Date
Max 1 Hour Average
 

JUN-22 70  
MAR-17 68  
MAR-04 64  
MAR-29 62  
MAY-28 62  
MAY-29 62  
JUN-21 62  
JUN-23 62  
OCT-08 62  
MAR-30 61  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
OCT-08 17.6  
JUN-16 17.4  
OCT-07 17.3  
MAR-03 17.1  
JUN-15 16.9  
OCT-02 16.3  
MAY-22 15.5  
JUN-14 15.5  
JAN-31 15.2  
JAN-01 14.4  
* = 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 2022.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
FEB-21 1.910 7.269
JUL-05 1.690 14.686
SEP-05 1.660 5.714
FEB-22 1.430 6.655
FEB-24 1.420 4.851
FEB-17 1.350 6.784
OCT-26 1.300 7.258
SEP-04 1.290 3.902
MAR-19 1.260 6.457
MAR-16 1.230 4.324

Date
Max 1 Hour Average
 
JUL-05 14.686  
SEP-02 10.686  
FEB-21 7.269  
OCT-26 7.258  
FEB-17 6.784  
FEB-22 6.655  
MAR-19 6.457  
FEB-11 5.865  
SEP-05 5.714  
JUN-28 5.462  
* = Value Not Available

Federal Air Quality Standard
Go To Top