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.

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  • To see what each symbol color represents, click the legend icon map icon 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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