Glacier NP Air Monitoring Station | Montana, United States

Glacier NP is an Air Monitoring Station located within Glacier National Park in Flathead County, Montana, United States. The station is part of the Clean Air Status and Trends Network (CASTNET), which monitors atmospheric deposition and ambient air quality across the United States. Operated by Mactec, Inc, the station contributes to a national program that assesses the effectiveness of emission reduction policies. The station collects data on criteria pollutants and atmospheric deposition, supporting the US EPA's Air Quality System (AQS) monitoring network. CASTNET stations are typically sited in rural or remote areas to represent regional background conditions, making Glacier NP an important site for understanding air quality in pristine environments. The station's last reported sample date is December 24, 2024, indicating ongoing operations. Glacier NP's location in a national park underscores its role in monitoring air quality in protected natural areas. The data collected helps track long-term trends in pollutants such as ozone, sulfur dioxide, and nitrogen compounds, which can affect ecosystem health and visibility. This information is vital for regulatory compliance under the Clean Air Act and for informing policies to protect sensitive ecosystems.

Glacier NP monitors air quality in a remote, high-elevation environment within the Northern Rocky Mountains. The station's siting represents regional background conditions, away from direct urban or industrial sources. Key parameters include ozone, sulfur dioxide, nitrogen oxides, and particulate matter, which are critical for assessing long-range transport of pollutants and their impacts on sensitive ecosystems. The station's data supports the EPA's goal of protecting air quality in national parks and wilderness areas.