King Greenleaf Rec Center Air Monitoring Station, Washington, District of Columbia

King Greenleaf Rec Center is an operational air monitoring station located at 201 N St SW in Washington, District of Columbia, United States. It is part of the District's ambient air quality monitoring network managed by the Department of Energy & Environment. The station provides data on criteria pollutants and other parameters to support regulatory compliance and public health assessments. The station operates under the US EPA Air Quality System (AQS) framework, which sets standards for monitoring methods, quality assurance, and data reporting. As part of the District of Columbia network, it helps fulfill requirements of the Clean Air Act and National Ambient Air Quality Standards (NAAQS). Typical air monitoring stations in urban areas measure pollutants such as ozone, particulate matter, nitrogen dioxide, and carbon monoxide. This station's location in a recreational center in southwest Washington supports community-scale air quality monitoring. Data from the station informs local air quality indices, health advisories, and policy decisions. The station contributes to the long-term record of air quality trends in the nation's capital, aiding in the assessment of emission reduction strategies and public exposure.

The station is situated in an urban residential area of Washington, D.C., near the Anacostia River. Local air quality is influenced by traffic emissions, building heating, and regional pollution transport. Monitoring at this site helps characterize population exposure in a densely populated neighborhood. The station's siting follows EPA representativeness guidelines for community-scale monitoring, providing data that reflects typical urban background conditions.