Leonia Air Monitoring Station, Leonia, New Jersey | Environmental Monitoring Facility

Leonia Air Monitoring Station is an operational air monitoring facility located in Overpeck Park, Leonia, New Jersey, United States. It is part of the state's ambient air quality monitoring network managed by the New Jersey State Department Of Environmental Protection. The station contributes to the US EPA Air Quality System (AQS) network, which tracks criteria pollutants and other parameters to assess compliance with National Ambient Air Quality Standards (NAAQS). The station operates under the regulatory framework of the Clean Air Act and EPA monitoring requirements. Typical air monitoring stations in New Jersey measure pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The station's last reported sample date is June 30, 2025, indicating ongoing data collection. Its location in a park setting provides representative sampling for the surrounding urban and suburban environment. As part of the New Jersey DEP network, Leonia station supports public health protection by providing data used for air quality index (AQI) reporting and regulatory compliance. The station's data helps inform local air quality management decisions and contributes to regional air quality assessments in the New York metropolitan area. Its continued operation ensures long-term trend analysis and community awareness.

Leonia is located in Bergen County, New Jersey, within the New York metropolitan area, a region with significant industrial, transportation, and urban emissions. Air monitoring stations like Leonia are critical for tracking criteria pollutants and assessing compliance with NAAQS. The station's siting in Overpeck Park provides a representative background location, minimizing local source interference. Parameter coverage typically includes ozone, PM2.5, and other pollutants, supporting health-based air quality indices and regulatory reporting.