• Views from Penobscot Mountain summit.


    National Park Maine

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  • Trail Closures: Peregrine Falcon Nesting

    Precipice Cliff, Valley Cove, and Jordan Cliff areas are closed to all public entry until further notice for peregrine falcon nesting season. More »

  • Cultural Connections programs rescheduled for 7/16/2014 due to weather

    Ash Log Pounding demo will take place today 11 am-3 pm at the Abbe Museum downtown (26 Mount Desert St, Bar Harbor). The Burnurwurbskek Singers have been rescheduled to perform on Cadillac Summit next Wed, July 23 at 11 am.

  • Trail Closure: Gorge Path weekdays, 7 am - 4 pm

    The section of the Gorge Path between the Hemlock Path intersection and the A. Murray Young Trail intersection is closed until rehabilitation work is completed. The closure will be in effect Mondays through Fridays only, from 7 am to 4 pm.

Air Resources

The air resources management program at Acadia is a comprehensive program designed to assess air pollution impacts and protect air quality-related resources. The park is downwind from large urban and industrial areas to the south and west and periodically experiences high concentrations of air pollutants, primarily as a result of long-range transport. As a Class I area under the Clean Air Act, Acadia is afforded the highest level of protection under the act.

The air program at Acadia began in the early 1980s and includes monitoring, research, and regulatory interaction with state and federal agencies. The core program includes long-term monitoring for ozone, sulfur dioxide, nitrogen oxides, volatile organic compounds (VOCs), fine particulates, visibility, mercury deposition and acid precipitation. Research has been conducted to determine the biological effects of selected air pollutants on park resources.

The air resources program is a collaborative effort involving the National Park Services' Air Resources Division and Northeast Regional Office, the Maine Department of Environmental Protection, and Acadia natural resource staff.


Did You Know?

Image of the Guide's Guide cover

The Guide's Guide to Acadia National Park, originally created to share important information about the park's facilities and natural and cultural resources with commercial guides, is available to the public on this website. The guide contains everything you would want to know about the park. More...