Yankee Air Monitoring Station, Middletown, Ohio | United States

Yankee is an air monitoring station located at 3350 Yankee Road in Middletown, Ohio, United States. It is part of the local environmental monitoring network and is operated by the Hamilton County Department of Environmental Services. The station is operational and contributes to the assessment of air quality in Butler County. The station operates under the regulatory framework of the US EPA Air Quality System (AQS), which sets standards for criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, and lead. Monitoring stations like Yankee typically measure a subset of these pollutants to ensure compliance with National Ambient Air Quality Standards (NAAQS). The last reported sample date is September 22, 2025, indicating ongoing data collection. Yankee plays a role in protecting public health and the environment by providing continuous air quality data. This information supports regulatory compliance, public awareness, and research on air pollution trends in the Middletown area. The station's location in a mixed residential and industrial area helps capture representative air quality conditions.

The station's location in Butler County, Ohio, places it in a region with a mix of urban, suburban, and industrial sources. Air monitoring in this area focuses on criteria pollutants and may include speciation for finer particles. The data supports the EPA's AQS network, which is used for regulatory compliance and public health advisories. Siting representativeness is important to capture both background and source-impacted conditions.