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: Davis Island
 Ad Hoc Reporting

AQS # L057-1035
Davis Island

10 Highest Daily Averages for Year 2020


CO Averages

CO data below are shown in Parts Per Million (PPM)
This site did not monitor CO during 2020.

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 77
APR-03 62 69
MAY-12 59 67
APR-04 58 66
MAY-03 57 59
APR-02 54 60
APR-28 53 60
JUN-11 53 69
JUN-15 53 67
MAR-12 52 59
 
Date
Max 1 Hour Average
 

MAY-02 77  
AUG-08 75  
APR-03 69  
JUN-11 69  
MAY-12 67  
JUN-15 67  
APR-04 66  
APR-22 63  
SEP-04 63  
APR-02 60  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
This site did not monitor PM 2.5 during 2020.

PM 10 Averages

PM 10 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
JUL-08 54.4  
JUL-09 50.7  
SEP-05 50.2  
SEP-04 49.4  
JUL-10 46.8  
AUG-25 46  
JUN-26 41.9  
JUL-03 41.8  
SEP-21 40.6  
AUG-01 40.4  
* = Value Not Available

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
AUG-08 6.690 52.400
AUG-28 5.470 39.300
MAR-01 4.320 36.800
AUG-13 3.970 6.600
MAR-02 3.840 23.500
APR-29 3.830 19.700
JUL-31 3.260 10.300
AUG-12 3.180 9.500
JUN-26 3.130 12.900
DEC-31 2.920 12.200

Date
Max 1 Hour Average
 
AUG-08 52.400  
AUG-28 39.300  
MAR-01 36.800  
SEP-07 23.800  
MAR-02 23.500  
APR-29 19.700  
APR-23 15.100  
OCT-11 13.700  
APR-07 13.000  
JUN-26 12.900  
* = Value Not Available

Federal Air Quality Standard
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