Overview
Closet World (Quemetco) is an air monitoring station in City of Industry, California, operated by the South Coast Air Quality Management District. It provides ambient air quality data for the Los Angeles region.
Closet World (Quemetco) is an air monitoring station located at 500 S. 7th Ave. in City of Industry, California, within Los Angeles County. The station is part of the South Coast Air Quality Management District's monitoring network, which tracks criteria pollutants and other air quality parameters to support regulatory compliance and public health protection. The station operates under the U.S. EPA's Air Quality System (AQS) framework, which sets standards for monitoring methods, siting, and data reporting. As part of the South Coast AQMD network, it contributes to regional air quality assessments and helps inform emission reduction strategies. The station's last reported sample date is June 30, 2025, indicating ongoing operations. This monitoring station plays a key role in characterizing air quality in the San Gabriel Valley, an area influenced by industrial activities, transportation corridors, and meteorological patterns. Data from this station supports public health advisories, regulatory compliance, and long-term trend analysis for the Los Angeles air basin.
Environmental context
The City of Industry area is part of the South Coast Air Basin, which faces challenges with ozone and particulate matter due to high population density, industrial emissions, and vehicle traffic. Air monitoring stations like Closet World (Quemetco) measure criteria pollutants such as ozone, PM2.5, and nitrogen dioxide, providing data essential for understanding local air quality trends and informing regulatory actions under the Clean Air Act.
Frequently asked questions
Closet World (Quemetco) is located at 500 S. 7th Ave. in City of Industry, California, within Los Angeles County.
The station is operated by the South Coast Air Quality Management District (South Coast AQMD), the regional air pollution control agency for the Los Angeles area.
As part of the South Coast AQMD network, the station typically monitors criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and other parameters required for compliance with the U.S. Clean Air Act.
Air monitoring in the U.S. is governed by the Environmental Protection Agency (EPA) under the Clean Air Act, with data reported through the Air Quality System (AQS). Monitoring methods and siting criteria follow EPA regulations to ensure data quality and representativeness.
The South Coast AQMD uses monitoring data to assess air quality, issue public health advisories, develop emission reduction plans, and demonstrate compliance with federal and state ambient air quality standards.
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