Region 1: EPA New England

2021 Ozone Exceedances

(Through March 19, 2021)

Below are the exceedances of the 0.070 parts per million (ppm) eight-hour average ozone standard, and the dates they occurred for each ozone monitor in New England. These data are preliminary, not quality assured and are subject to change.

Connecticut
Monitor Location Date Concentration (ppm)  
 

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Maine
Monitor Location Date Concentration (ppm)  
 

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New Hampshire
Monitor Location Date Concentration (ppm)  
       

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Rhode Island
Monitor Location Date Concentration (ppm)  
 

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Vermont
Monitor Location Date Concentration (ppm)  
       

* Possible Exceptional Event

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