Bethel Island Air Monitoring Station | Contra Costa County, California

Bethel Island is an air monitoring station located at 5551 Bethel Island Rd, Bethel Island, California, United States. It is part of the Bay Area Air Quality Management District's monitoring network, which tracks criteria pollutants and other air quality parameters to support regulatory compliance and public health. 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 a local station, it contributes to the broader network that assesses regional air quality against National Ambient Air Quality Standards (NAAQS). The last reported sample date is February 29, 2024, indicating ongoing operation. Environmental monitoring in the San Francisco Bay Area is critical due to the region's dense population, industrial activity, and traffic emissions. Bethel Island's location in the Sacramento-San Joaquin River Delta provides data on air quality in a mixed urban-agricultural setting, helping to inform local air management strategies and public advisories.

The Bethel Island station monitors ambient air quality in the Sacramento-San Joaquin River Delta, an area influenced by agricultural emissions, marine air from the Pacific, and urban pollution from the Bay Area. Its siting is representative of a rural-suburban interface, providing data on ozone, particulate matter, and other pollutants. The station's reporting to the Bay Area Air Quality Management District ensures compliance with California's stringent air quality standards and contributes to the EPA's national monitoring network.