For more information about National Park Service air resources, please visit

Who We Are

Air Quality

Air quality affects all areas of the planet and has become an issue for many National Parks. The National Park Service is working to monitor and understand the impacts of air pollution at National Parks.

The Air Resources Division, in partnership with parks and others, works to preserve, protect, enhance, and understand air quality and other resources sensitive to air quality in the National Park System.

The National Park Service is responsible for preserving, protecting, and enhancing air quality and air quality-related values in units of the National Park System by ensuring compliance with the requirements of the Clean Air Act and the National Park Service Organic Act. Air quality-related values include visibility, flora, fauna, cultural and historical resources, odor, soil, water, and virtually all resources that are dependent upon and affected by air quality.

The Air Resources Division oversees the national air resource management program for the NPS. Together with parks and NPS regional offices, we monitor air quality in park units; review permit applications for proposed major emitting sources, air quality legislative and regulatory proposals, and NPS and other federal or state air quality plans; develop data on sensitive park resources; research causes and effects of visibility impairment and acid deposition; develop meteorological and atmospheric dispersion modeling methodologies; and produce informational materials.

Last Updated: April 04, 2011