Mackville Air Monitoring Station, Harrodsburg, Kentucky | CASTNET Network

Mackville is an air monitoring station located at 542 Wesley-Miller Rd, Harrodsburg, Kentucky, within Washington County. It is part of the Clean Air Status and Trends Network (CASTNET), a national network designed to assess the effectiveness of emission reduction programs under the Clean Air Act. The station is operational and reports to the US EPA, with the most recent sample collected on December 24, 2024. As a CASTNET site, Mackville measures ambient concentrations of criteria pollutants, particulate matter, and atmospheric deposition parameters. The network employs consistent monitoring protocols and quality assurance procedures to ensure data comparability across sites. The station's location in a rural area of Kentucky provides representative background air quality data for the region, complementing urban monitoring stations. The data from Mackville supports regulatory compliance assessments and scientific research on air pollution trends, ecosystem effects, and visibility impairment. The station contributes to the broader US EPA Air Quality System (AQS) and helps track long-term changes in air quality in the Ohio River Valley region, which has historically been influenced by industrial emissions and power generation.

The Mackville station is situated in a rural area of central Kentucky, where air quality is influenced by regional transport of pollutants from industrial sources, power plants, and agricultural activities. As part of CASTNET, the station monitors key parameters including ozone, sulfur dioxide, nitrogen oxides, and particulate matter, as well as wet and dry deposition. This data is critical for understanding the effectiveness of emission reduction policies under the Clean Air Act and for assessing impacts on sensitive ecosystems in the region.