Overview
HAMILTON - PS 46 is an operational air monitoring station in Hamilton, Montana, operated by the MT Dept of Environmental Quality. It provides ambient air quality data for the region.
HAMILTON - PS 46 is an air monitoring station located in Hamilton, Ravalli County, Montana, United States. Operated by the Montana Department of Environmental Quality's Air Quality Division, it is part of the state's ambient air quality monitoring network. The station contributes to the assessment of air pollution levels in the Bitterroot Valley region. The station operates under the regulatory framework of the U.S. Clean Air Act and the EPA's Air Quality System (AQS). It likely measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), and other parameters relevant to local air quality. The last reported sample date is June 30, 2025, indicating ongoing data collection. Air monitoring in Hamilton supports public health by tracking pollutants from sources such as wood burning, transportation, and industrial activities. The data helps inform local air quality management and compliance with National Ambient Air Quality Standards (NAAQS). This station plays a key role in protecting community health and the environment.
Environmental context
Hamilton is situated in the Bitterroot Valley, surrounded by mountains, which can trap pollutants during temperature inversions. The area experiences seasonal air quality challenges from wood smoke in winter and wildfire smoke in summer. Monitoring stations like PS 46 are critical for tracking particulate matter and ozone levels, ensuring compliance with EPA standards and providing data for public health advisories.
Frequently asked questions
HAMILTON - PS 46 is located at Madison and 3rd Street South in Hamilton, Ravalli County, Montana, United States.
As an air monitoring station, HAMILTON - PS 46 likely measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), and other air quality parameters as part of Montana's ambient air monitoring network.
The station is operated by the Montana Department of Environmental Quality, Air Quality Division.
Air monitoring in the U.S. is governed by the Clean Air Act and implemented through the EPA's Air Quality System (AQS). Stations must follow National Ambient Air Quality Standards (NAAQS) for criteria pollutants.
Hamilton's location in the Bitterroot Valley can lead to air pollution buildup during inversions. Monitoring helps track pollutants from wood burning, wildfires, and other sources, protecting public health and ensuring compliance with air quality standards.
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