AIR RESOURCES BOARD BUILDING, EL MONTE - Air Monitoring Station in Los Angeles County, California

AIR RESOURCES BOARD BUILDING, EL MONTE is an air monitoring station located at 9528 Telstar, El Monte, California, within Los Angeles County. Operated by the California Air Resources Board, this facility is part of a statewide network that tracks ambient air quality to protect public health and the environment. 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. As part of California's extensive monitoring network, it likely measures multiple pollutants to assess compliance with National Ambient Air Quality Standards (NAAQS). The station's location in an urban area provides representative data for population exposure. Environmental monitoring in the Los Angeles region is critical due to the area's history of smog and ongoing challenges with ozone and particulate matter. Data from this station supports air quality management, health advisories, and emission reduction strategies. The California Air Resources Board uses such data to inform policy and regulatory actions, contributing to improved air quality over time.

The El Monte station is situated in the South Coast Air Basin, a region with persistent air quality challenges due to high population density, traffic emissions, and industrial activity. Monitoring here focuses on criteria pollutants like ozone and PM2.5, which are linked to respiratory and cardiovascular health effects. The station's siting is representative of urban exposure, supporting regulatory compliance and public health protection under the Clean Air Act.