Voyageurs NP #2 Air Monitoring Station, Voyageurs National Park, Minnesota

Voyageurs NP #2 is an air monitoring station located within Voyageurs National Park in Saint Louis County, Minnesota, United States. It is part of the Clean Air Status and Trends Network (CASTNET), which monitors ambient air quality and atmospheric deposition across the country. The station is operated by Mactec, Inc. and reports to the U.S. Environmental Protection Agency (EPA). The station collects data on criteria pollutants and other atmospheric parameters, contributing to the EPA's Air Quality System (AQS). CASTNET sites are designed to assess the effectiveness of emission reduction programs and to track trends in air quality and ecosystem health. The station's location in a national park provides a background reference for regional air quality. As part of a national network, Voyageurs NP #2 supports regulatory compliance with the Clean Air Act and helps inform policy decisions. Its data is used to evaluate the impact of air pollution on sensitive ecosystems, including forests and aquatic habitats in the Boundary Waters region. The station plays a key role in understanding long-range transport of pollutants.

Voyageurs NP #2 is situated in a remote, forested region of northern Minnesota, near the Canadian border. The area is characterized by boreal forests, lakes, and wetlands, making it sensitive to acid deposition and nitrogen enrichment. The station monitors atmospheric pollutants that can affect water quality and biodiversity in the Boundary Waters Canoe Area Wilderness and Voyageurs National Park. Its data helps assess compliance with the EPA's secondary National Ambient Air Quality Standards (NAAQS) for ecosystem protection.