Overview
West Yellowstone Park Ent #2 is an air monitoring station operated by the National Park Service near the west entrance of Yellowstone National Park in Montana, USA. It provides continuous ambient air quality data for the region.
West Yellowstone Park Ent #2 is an air monitoring station located northeast of the West Park Entrance Gate in Gallatin County, Montana, United States. Operated by the National Park Service, this station is part of the broader US EPA Air Quality System (AQS) monitoring network, which tracks criteria pollutants and other atmospheric parameters to protect public health and the environment. The station collects ambient air quality data, with the most recent sample recorded on September 30, 2025. As a National Park Service facility, it supports the agency's mission to preserve natural resources by monitoring air quality in and around Yellowstone National Park. The station's siting is representative of the park's pristine environment, providing baseline data for assessing regional air quality trends. This monitoring station plays a key role in understanding the impact of nearby emissions sources, such as vehicle traffic and regional industrial activities, on the park's air quality. The data collected helps inform regulatory decisions under the Clean Air Act and contributes to the long-term protection of Yellowstone's ecosystems and visitor health.
Environmental context
The station is situated near Yellowstone National Park, a vast protected area with diverse ecosystems. Air monitoring in this region focuses on tracking pollutants like ozone, particulate matter, and nitrogen compounds, which can affect visibility, vegetation, and wildlife. The National Park Service's monitoring efforts help assess the influence of regional emissions from transportation and energy production on this sensitive environment.
Frequently asked questions
West Yellowstone Park Ent #2 is located northeast of the West Park Entrance Gate in Gallatin County, Montana, near Yellowstone National Park.
The station is operated by the National Park Service, which manages air quality monitoring in national parks across the United States.
Data from this station contributes to the US EPA's Air Quality System, helping to assess compliance with National Ambient Air Quality Standards (NAAQS) and inform air quality management decisions.
Monitoring near Yellowstone helps protect the park's natural resources, including visibility, vegetation, and wildlife, by tracking pollutants that may affect the ecosystem and visitor experience.
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