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Air Quality in Maine
Notes: Data is for the current/most recent hour available; time remains on EST year-round; data is preliminary and has not been through the quality assurance process. Values over 900 signify an error and are not actual measurements.
Ozone levels in Maine are higher during the warmer months and lower during the cooler months. Therefore, during the cooler months many of the monitors are turned off so data is only available from a few sites. During the warmer months data will be available from all our ozone sites.
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located in the top right corner of each map. - Click on each location in the map to see the site name and concentration for the hour displayed.
- A gray circle on either map indicates no data was available during the hour for that site. Concentrations will show as zero in their respective pop-up(s).
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