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 2021


CO Averages

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

MAR-10 0.4 0.450
JUL-24 0.3 0.321
APR-22 0.3 0.335
JUL-25 0.3 0.302
JUL-26 0.3 0.297
JAN-21 0.3 0.392
JUL-28 0.3 0.289
JUL-29 0.3 0.287
JUL-30 0.3 0.292
AUG-01 0.3 0.287
 
Date
Max 1 Hour Average
 

MAR-10 0.450  
JAN-21 0.392  
MAR-22 0.353  
APR-22 0.335  
JUL-24 0.321  
OCT-27 0.312  
SEP-22 0.303  
JUL-25 0.302  
JAN-20 0.299  
JUL-26 0.297  

NO2 Averages

NO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor NO2 during 2021.

Ozone Averages

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

APR-22 61 70
MAY-15 55 58
SEP-10 55 61
MAY-09 54 56
MAR-08 53 56
APR-21 53 56
MAY-08 53 55
MAY-16 53 55
MAY-17 53 54
APR-23 52 54
 
Date
Max 1 Hour Average
 

APR-22 70  
FEB-28 63  
SEP-10 61  
FEB-27 58  
MAY-15 58  
MAR-22 57  
MAR-08 56  
APR-02 56  
APR-21 56  
MAY-09 56  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
AUG-26 25.1  
JUN-19 21.9  
APR-22 18.9  
AUG-31 17.3  
AUG-25 17.2  
JUL-25 14.7  
AUG-27 14.3  
FEB-04 14.1  
JUN-20 14.1  
JUL-27 13.8  
* = 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 2021.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
Date
Max Daily (24-Hour) Average
1 Hour Average
AUG-19 1.270 4.511
SEP-26 1.090 1.531
SEP-13 1.050 1.620
OCT-02 1.050 1.310
SEP-14 1.040 2.144
SEP-16 1.040 3.723
OCT-04 1.040 1.287
SEP-25 1.030 1.180
OCT-01 1.030 1.349
SEP-30 1.010 1.199

Date
Max 1 Hour Average
 
MAY-16 5.835  
AUG-19 4.511  
NOV-30 4.346  
SEP-16 3.723  
MAR-08 2.964  
MAR-10 2.418  
SEP-14 2.144  
SEP-18 2.054  
AUG-14 1.735  
AUG-11 1.714  
* = Value Not Available

Federal Air Quality Standard
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