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: St. Marks Wildlife Refuge
 Ad Hoc Reporting

AQS # G129-0001
St. Marks Wildlife Refuge

10 Highest Daily Averages for Year 2025


CO Averages

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

JAN-06 0.3 0.151
JAN-07 0.3 0.345
JAN-03 0.3 0.320
MAR-26 0.2 0.201
MAR-27 0.2 0.340
MAR-02 0.2 0.247
JAN-02 0.2 0.185
FEB-23 0.2 0.235
APR-17 0.2 0.282
FEB-24 0.2 0.266
 
Date
Max 1 Hour Average
 

MAR-11 0.483  
FEB-28 0.452  
FEB-17 0.427  
FEB-21 0.420  
MAR-08 0.367  
MAR-03 0.352  
JAN-07 0.345  
MAR-27 0.340  
FEB-22 0.327  
JAN-03 0.320  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2025.

Ozone Averages

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

APR-17 64 67
FEB-26 56 62
APR-10 56 59
APR-11 55 59
APR-16 55 59
MAR-12 54 56
MAR-27 54 58
MAR-01 53 56
MAR-28 52 55
APR-09 52 54
 
Date
Max 1 Hour Average
 

APR-17 67  
FEB-26 62  
APR-10 59  
APR-11 59  
APR-16 59  
MAR-27 58  
MAR-02 57  
MAR-01 56  
MAR-12 56  
MAR-26 55  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
APR-17 16.3  
MAR-02 16.2  
FEB-23 16.1  
MAR-27 15.7  
FEB-26 15  
APR-24 14.2  
MAR-16 13.9  
APR-21 13.5  
APR-27 13  
FEB-24 12.8  
* = 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 2025.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
MAR-27 0.420 0.537
APR-10 0.360 0.516
APR-11 0.360 0.516
APR-09 0.350 0.465
MAR-28 0.330 0.464
APR-02 0.330 0.873
APR-13 0.320 0.366
MAR-26 0.310 0.574
MAR-29 0.300 0.409
APR-14 0.300 0.395

Date
Max 1 Hour Average
 
APR-02 0.873  
JAN-07 0.781  
JAN-05 0.648  
APR-16 0.639  
JAN-09 0.587  
MAY-09 0.586  
JAN-18 0.585  
MAR-26 0.574  
FEB-26 0.554  
APR-04 0.551  
* = Value Not Available

Federal Air Quality Standard
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