Helmsburg Air Monitoring Station, Brown County, Indiana | United States

Helmsburg is an air monitoring station located at 4831 Helmsburg Rd. in Helmsburg, Indiana, within Brown County. The station is operated by the Indiana Department of Environmental Management's Office of Air Quality and is part of the broader US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other atmospheric parameters across the United States. The station operates under the regulatory framework of the Clean Air Act and EPA ambient air quality standards. While specific parameters measured are not detailed, typical rural monitoring stations in Indiana track ozone, particulate matter (PM2.5 and PM10), and meteorological conditions. The station's location in a rural area provides background air quality data representative of the region. Environmental monitoring at Helmsburg supports state and federal efforts to assess air quality trends, protect public health, and ensure compliance with National Ambient Air Quality Standards (NAAQS). Data from this station contributes to regional air quality management and research on long-term atmospheric changes.

Helmsburg's rural setting in Brown County provides baseline air quality data away from major urban and industrial sources. This siting is representative of regional background conditions, which is critical for understanding pollution transport and the effectiveness of emission reduction policies. The station's data supports the EPA's AQS network, which is essential for regulatory compliance and public health advisories.