San Jose - Knox Avenue Air Monitoring Station | San Jose, California Environmental Monitoring

San Jose - Knox Avenue is an air monitoring station located at 1007 Knox Ave in San Jose, California, United States. It is part of the NEAR ROAD network, which focuses on monitoring air quality near roadways to assess traffic-related pollution. The station is operated by the Bay Area Air Quality Management District (BAAQMD), the regional agency responsible for air quality regulation in the San Francisco Bay Area. The station is situated in a residential and commercial area of San Jose, near major roadways, making it representative of urban air quality impacts from transportation. As a NEAR ROAD site, it likely measures criteria pollutants such as nitrogen dioxide (NO2), carbon monoxide (CO), and particulate matter (PM2.5 and PM10), which are common near traffic corridors. The station's last reported sample date is February 29, 2024, indicating recent active monitoring. This monitoring station supports the BAAQMD's efforts to comply with the U.S. Environmental Protection Agency's (EPA) National Ambient Air Quality Standards (NAAQS) and contributes to the EPA's Air Quality System (AQS) database. The data collected helps inform local air quality management strategies, public health advisories, and transportation planning to reduce emissions and protect community health in the San Jose area.

San Jose is located in the Santa Clara Valley, part of the San Francisco Bay Area, which experiences a Mediterranean climate with temperature inversions that can trap pollutants. The region has historically faced challenges with ozone and particulate matter, largely from vehicle emissions and industrial sources. The NEAR ROAD network specifically targets near-roadway pollution, which is a significant concern in urban areas with high traffic density. Monitoring at this site helps assess exposure risks for nearby populations and supports regulatory compliance with the Clean Air Act and EPA standards.