Air pollution is among the most serious threats facing national parks, threatening visitors’ health, clouding scenic vistas and altering our climate. To restore clean air to national parks, we work to defend the clean air laws that protect them.

Air pollution threatens the health of parks’ visitors, ecosystems and surrounding communities, while cutting miles and miles off of scenic views. Most of the air pollution affecting national parks results from the burning of fossil fuels, especially by coal-fired power plants and oil and gas development, but vehicles and agricultural and industrial emissions are also contributors.

The Clean Air Act’s Regional Haze Rule requires the restoration of naturally clean air in America’s most treasured national parks and wilderness areas, but the job will never get done unless the rule is enforced. While the vast majority of visitors want and expect clean air in America’s national parks, some decision-makers are intent on undermining the rule and other clean air protections. Safeguarding our natural and cultural treasures has never been more important.

National Parks Conservation Association works every day to protect, defend and ensure implementation of these clean air protections to deliver critical improvements to air quality in our national parks and surrounding communities. We also work to guard park air from the threats of new pollution sources and to forward new clean air and climate policies that will help make our park’s air healthy and clear.

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To defend the laws that help protect our national parks from air pollution, we need your help. Please sign up at left to receive our news updates and action alerts today!

Learn more by reading NPCA’s Polluted Parks report and Clean Air for Parks fact sheets.

#CleanAir4Parks actions taken: 32,000 since summer 2015!

Asking the Environmental Protection Agency to adopt strong revisions to the Regional Haze Rule.


  • More than 16,300 letters sent to the Obama Administration

    Feb 2016

    NPCA activists urged President Obama and EPA Administrator Gina McCarthy to close loopholes that prevent clean air in our national parks.

  • 15,000 Comment on Revised Regional Haze Rule

    Aug 2016

    National park advocates urged the EPA to adopt strong revisions to the Regional Haze Rule to restore clean air and clear views to our national parks.

  • Hundreds Ask EPA to Keep Nebraska's Coal Pollution out of National Parks!

    Oct 2016

    More than 500 advocates urged the EPA to keep Nebraska's coal pollution out of national parks by requiring the cleanup of the Gerald Gentleman power plant.

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