Overview
This air monitoring station in Diamond Bar, California, is operated by the South Coast Air Quality Management District. It provides critical data on ambient air quality for the Los Angeles region.
The site is located one half mile east of the I-57/I-60 interchange in Diamond Bar, California, United States. This air monitoring station is part of the South Coast Air Quality Management District's network, which monitors air quality in the South Coast Air Basin, home to over 17 million people. The station operates under the US EPA's Air Quality System (AQS) framework, measuring criteria pollutants such as ozone, particulate matter, and nitrogen dioxide. The data collected supports compliance with National Ambient Air Quality Standards (NAAQS) and informs public health advisories. As part of a dense monitoring network in Los Angeles County, this station contributes to understanding local air pollution patterns, especially near major highways. Its location near the I-57/I-60 interchange allows for representative sampling of traffic-related emissions, which is vital for regulatory assessments and community exposure studies.
Environmental context
The station's location in Diamond Bar, within the Los Angeles Basin, places it in a region with historically high ozone and particulate matter levels due to heavy traffic and industrial activity. Monitoring at this site helps track progress toward attainment of federal air quality standards. The South Coast Air Quality Management District operates over 30 stations in the basin, providing high-resolution data on pollutant trends and meteorological conditions.
Frequently asked questions
The station is located at 21865 E. Copley Drive, Diamond Bar, California, approximately one half mile east of the I-57/I-60 interchange.
As part of the South Coast Air Quality Management District network, this station monitors criteria pollutants including ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and carbon monoxide, among others.
The station is operated by the South Coast Air Quality Management District (South Coast AQMD), the regulatory agency responsible for air quality in the South Coast Air Basin.
Air monitoring stations in the US operate under the EPA's Air Quality System (AQS), which sets National Ambient Air Quality Standards (NAAQS) for criteria pollutants. Data is used to determine compliance and inform public health.
Diamond Bar is in the Los Angeles Basin, an area with significant traffic and industrial emissions. Monitoring helps track pollution levels, assess health risks, and evaluate the effectiveness of emission reduction strategies.
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