Overview
COOK COUNTY TRAILER is an operational air monitoring station in Lemont, Illinois, operated by the Cook County Department of Environmental Control. It provides ambient air quality data as part of the county's environmental monitoring network.
COOK COUNTY TRAILER is an air monitoring station located at 729 Houston in Lemont, Illinois, within Cook County. Operated by the Cook County Department of Environmental Control, this station is part of a local network that tracks ambient air quality to support regulatory compliance and public health. The station is operational and contributes to the broader US EPA Air Quality System (AQS) network. As a mobile trailer-style station, it is designed for flexible siting to capture representative air quality data across different locations. While specific parameters measured are not detailed, typical criteria pollutants monitored at such stations include ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The station's last reported sample date is September 30, 2025, indicating recent active monitoring. The station's location in Lemont, a village in the Chicago metropolitan area, places it in a region with diverse emission sources including industrial facilities, transportation corridors, and residential areas. Data from this station helps inform local air quality management and supports compliance with National Ambient Air Quality Standards (NAAQS) under the Clean Air Act. The Cook County Department of Environmental Control uses this information to assess pollution trends and develop mitigation strategies.
Environmental context
The station operates within the regulatory framework of the US EPA's Air Quality System (AQS), which sets standards for criteria pollutants. Its siting in Lemont provides representative monitoring for the Chicago metropolitan area, capturing urban and industrial emissions. The station's mobility allows for targeted monitoring in response to local air quality concerns, supporting the county's efforts to maintain compliance with NAAQS and protect public health.
Frequently asked questions
COOK COUNTY TRAILER is located at 729 Houston in Lemont, Illinois, United States, within Cook County.
The station is operated by the Cook County Department of Environmental Control, which manages local air quality monitoring.
Typical air monitoring stations in the US EPA network measure criteria pollutants such as ozone, particulate matter, nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead.
The station is part of the US EPA's Air Quality System (AQS), which supports compliance with National Ambient Air Quality Standards (NAAQS) under the Clean Air Act.
Mobile trailer stations like COOK COUNTY TRAILER allow flexible siting to capture representative air quality data across different locations, aiding in targeted monitoring and assessment of local pollution sources.
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