Penobscot Air Monitoring Station, Old Town, Maine | US EPA AQS Network

Penobscot is an air monitoring station located at 21-55 Wabanaki Way in Old Town, Maine, United States. It is operated by the National Park Service and contributes to the US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other atmospheric parameters across the country. The station's last reported sample date is February 27, 2025, indicating ongoing operational status. As part of the federal monitoring network, it likely measures pollutants such as ozone, particulate matter, and nitrogen dioxide, supporting compliance with National Ambient Air Quality Standards (NAAQS). The station's siting in a rural area of Maine provides background air quality data representative of regional conditions. Environmental monitoring in this region is important for assessing air quality impacts from local sources and long-range transport. The data collected supports research on atmospheric chemistry and ecosystem health, particularly in sensitive areas like Acadia National Park. This station helps inform public health advisories and regulatory decisions.

The Penobscot air monitoring station is situated in a rural area of Maine, providing background air quality data that reflects regional atmospheric conditions. Its location away from major urban centers allows for assessment of long-range pollutant transport and baseline levels. The station's measurements contribute to understanding ozone and particulate matter trends in the northeastern United States, supporting compliance with the Clean Air Act and informing air quality management strategies.