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 2018


CO Averages

CO data below are shown in Parts Per Million (PPM)
This site did not monitor CO during 2018.

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 66 73
MAR-24 59 63
APR-20 59 66
JUL-10 59 72
APR-05 58 68
APR-29 58 65
APR-12 55 57
JUL-23 55 60
APR-17 54 60
APR-30 54 56
 
Date
Max 1 Hour Average
 

JUN-19 74  
APR-18 73  
JUL-10 72  
APR-05 68  
APR-20 66  
APR-29 65  
MAR-24 63  
MAY-11 61  
JUN-13 61  
APR-17 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 2018.

PM 10 Averages

PM 10 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
JUL-22 46.6  
AUG-09 44.4  
APR-21 36.6  
AUG-08 33.1  
FEB-15 32.6  
MAR-29 32.1  
MAR-27 31.5  
AUG-10 31.5  
MAY-01 30.6  
NOV-07 30.6  
* = Value Not Available

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
DEC-24 7.570 73.500
FEB-22 3.420 20.200
NOV-30 2.900 12.200
JUN-12 2.380 12.900
MAR-10 2.230 5.000
FEB-20 2.110 5.200
FEB-23 2.040 4.900
MAR-06 1.960 8.100
DEC-13 1.900 10.000
DEC-01 1.830 8.300

Date
Max 1 Hour Average
 
DEC-24 73.500  
DEC-05 25.800  
OCT-04 24.000  
AUG-05 21.200  
FEB-22 20.200  
JUN-12 12.900  
NOV-30 12.200  
DEC-13 10.000  
JUN-17 9.100  
DEC-01 8.300  
* = Value Not Available

Federal Air Quality Standard
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