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.

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Mayo Clinic

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
JUL-18 71 85
JUN-29 63 68
APR-19 62 65
MAY-04 62 64
JUN-28 62 65
APR-20 61 62
JUN-10 59 62
JUN-25 59 62
APR-18 58 62
NOV-08 58 65
 
Date
Max 1 Hour Average
 
JUL-18 85  
JUN-29 68  
JUL-01 66  
APR-19 65  
JUN-28 65  
NOV-07 65  
NOV-08 65  
MAY-04 64  
SEP-23 64  
JUN-07 63  

PM 2.5 Averages

PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Average
 
OCT-03 44.9  
JUL-18 24.7  
OCT-02 23.3  
MAR-03 22.6  
AUG-22 19.4  
NOV-06 18.8  
AUG-21 18.6  
FEB-23 18.4  
MAR-02 18.3  
NOV-08 18.2  
* = 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 2023.

SO2 Averages

SO2 data below are shown in Parts Per Billion (PPB)
This site did not monitor SO2 during 2023.
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