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 2023


CO Averages

CO data below are shown in Parts Per Million (PPM)
This site did not monitor CO during 2023.

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2023.

Ozone Averages

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

MAY-05 72 79
MAR-30 67 73
MAY-30 65 71
MAY-04 64 73
APR-18 62 65
MAY-08 62 76
MAY-10 61 70
JUN-05 61 69
JUN-06 61 67
JUN-10 61 65
 
Date
Max 1 Hour Average
 

SEP-15 81  
MAY-05 79  
MAY-08 76  
MAR-30 73  
MAY-04 73  
MAR-21 72  
SEP-06 72  
MAY-30 71  
MAY-10 70  
JUL-26 70  

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 2023.

PM 10 Averages

PM 10 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
OCT-03 57.4  
AUG-22 54.7  
AUG-23 53.6  
MAR-03 48.7  
MAR-31 46.1  
JUL-25 43.2  
JAN-11 41.5  
FEB-24 41.5  
APR-11 41.3  
JUL-26 41.2  
* = Value Not Available

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
JUL-26 17.630 110.800
JAN-11 4.230 41.400
FEB-08 3.750 17.000
FEB-16 3.340 12.800
APR-05 3.270 9.800
JUL-25 2.960 16.900
JUL-19 2.650 *
FEB-15 2.640 12.700
SEP-10 2.580 6.800
JUL-31 2.530 12.100

Date
Max 1 Hour Average
 
JUL-26 110.800  
JAN-11 41.400  
MAR-12 23.900  
APR-16 20.300  
FEB-08 17.000  
JUL-25 16.900  
JUL-28 14.700  
MAR-23 14.000  
FEB-16 12.800  
FEB-15 12.700  
* = Value Not Available

Federal Air Quality Standard
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