Popham Beach State Park Air Monitoring Station, Sagadahoc County, Maine

Popham Beach State Park Air Monitoring Station is an operational air monitoring facility located at 711 Popham Road in Sagadahoc County, Maine, United States. It is part of the state's ambient air quality monitoring network, operated under the Maine Department of Environmental Protection's Bureau of Air Quality Control. The station contributes to the US EPA's Air Quality System (AQS) network, which tracks criteria pollutants and other parameters to assess compliance with National Ambient Air Quality Standards (NAAQS). The station collects air quality samples, with the most recent sample date recorded as October 16, 2025. As a coastal monitoring site, it provides valuable data on background air quality influenced by marine and local sources. The station's location in a state park setting offers representative siting for assessing regional air quality, away from direct urban emission sources. Typical parameters measured at such stations include ozone, particulate matter (PM2.5 and PM10), and meteorological variables, though specific parameter lists are not detailed here. This monitoring station supports public health and environmental management by providing data used for air quality index reporting, regulatory compliance, and research. Its coastal position helps track pollutant transport from both local and distant sources, contributing to Maine's air quality management and the broader US monitoring network. The station's ongoing operation ensures continuity of long-term air quality records essential for trend analysis and policy development.

The station's coastal location at Popham Beach State Park provides representative monitoring for Maine's mid-coast region, capturing air masses influenced by both marine and continental sources. This siting is important for understanding background ozone and particulate levels, as well as the impact of coastal meteorology on pollutant dispersion. The station's data supports the Maine DEP's efforts to meet EPA NAAQS requirements and contributes to regional air quality assessments in the Gulf of Maine area.