Simi Valley-Cochran Street Air Monitoring Station, Simi Valley, California

Simi Valley-Cochran Street is an air monitoring station located at 5400 Cochran Street in Simi Valley, California, within Ventura County. Operated under the California Air Resources Board, this station is part of the state's extensive air quality monitoring network, which supports compliance with the US EPA's National Ambient Air Quality Standards (NAAQS). The station's last reported sample date is June 30, 2025, indicating ongoing data collection. As a component of the California Air Resources Board network, the station likely measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and carbon monoxide, following EPA-approved methods. The station's location in a suburban area of Southern California provides representative data for population exposure assessment and regulatory compliance. The network adheres to EPA's Air Quality System (AQS) protocols for data validation and reporting. The station contributes to regional air quality management in the South Coast Air Basin, an area with historically elevated ozone and particulate matter levels. Its data supports public health advisories, attainment demonstrations, and emission reduction strategies. The station's operational continuity ensures long-term trend analysis for evaluating air quality improvements.

Simi Valley is located in Ventura County within the South Coast Air Basin, where air quality is influenced by emissions from transportation, industry, and wildfires. The station's monitoring of criteria pollutants supports the region's State Implementation Plan for ozone and PM2.5 attainment. Its siting in a residential area provides representative exposure data for the local population, aiding in health risk assessments and regulatory compliance under the Clean Air Act.