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Denali National Park and Preserve
Air Quality
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![A clear day in Denali. A clear day in Denali.](https://webarchive.library.unt.edu/eot2008/20090510192248im_/http://www.nps.gov/dena/naturescience/images/air_quality.jpg) |
Tom Walker | Crisp and clear scenic vistas like this view of the Alaska Range are the result of Denali’s exceptionally clean air. |
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The air in Denali National Park is exceptionally clean, allowing spectacular views of the Alaska Range when the mountains are free of clouds. National Park Service air quality monitoring has shown that Denali consistently has some of the best visibility and cleanest air measured in the country, although parks in the Pacific Northwest often record lower annual ozone values, and western desert parks sometimes have fewer visibility-degrading particles in the air. It is not surprising to discover that Alaska has such clean air, considering the low population density and relatively sparse industrial activity in the state.
What may be surprising, however, is the presence of airborne contaminants in Denali that travel halfway around the world before reaching the park. Each year, small but measurable amounts of pollution arrive in Denali from Europe and Asia. These pollutants come from power plants, metal smelters, and other industrial sources, and are transported over the North Pole and throughout the arctic regions in a phenomenon called arctic haze. Desert dust and agricultural contaminants can travel directly across the Pacific Ocean to reach the park. Airborne contaminants from other continents will likely increase over time as the source areas grow and develop. Denali’s clean air may eventually depend more on international treaties and the environmental policies of other countries than on U.S. laws designed to protect air quality.
Under the U.S. Clean Air Act, Denali receives the strongest protection possible as a designated Class I area. The National Park Service carries out its responsibility to protect park air quality in the following ways:
- communicating information about air quality in parks to the public
- providing recommendations and technical assistance to state, federal and tribal regulatory agencies
- working cooperatively through partnerships in the development of air pollution control strategies
- promoting sustainability and pollution prevention practices in parks
More information is available directly from the National Park Service .
Click here to view NPS .
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| ![](https://webarchive.library.unt.edu/eot2008/20090510192248im_/http://www.nps.gov/commonspot/images/clear.gif) | ![](https://webarchive.library.unt.edu/eot2008/20090510192248im_/http://www.nps.gov/commonspot/images/clear.gif) |
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![image of researcher in field image of researcher in field](https://webarchive.library.unt.edu/eot2008/20090510192248im_/http://www.nps.gov/ser/customcf/apps/CMS_HandF/Pictures/DENA_POPs-icon.jpg) POPs About Persistent Organic Pollutants (POPs) more... | |
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Did You Know?
Did you know that pets must be leashed at all times when visiting Denali National Park and Preserve? They are not allowed on trails, riverbars, or in the backcountry.
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Last Updated: December 01, 2006 at 16:29 EST |