Gilroy Air Monitoring Station, Gilroy, California | US EPA AQS Network

Gilroy is an air monitoring station located in Gilroy, Santa Clara County, California, United States. It is part of the Bay Area Air Quality Management District's monitoring network, which tracks criteria pollutants and other parameters to assess regional air quality. The station is operational and contributes to the US EPA's Air Quality System (AQS) network. The station operates under the regulatory framework of the US Clean Air Act and the EPA's ambient air quality standards. It measures pollutants such as ozone, particulate matter, and others to ensure compliance with National Ambient Air Quality Standards (NAAQS). The Bay Area Air Quality Management District oversees the station's operations and data reporting, with the most recent sample collected in February 2024. Environmental monitoring at this station supports public health protection and regulatory compliance in the San Francisco Bay Area. The data helps inform air quality forecasts, health advisories, and emission reduction strategies. As part of a dense urban monitoring network, Gilroy provides representative measurements for the local community and contributes to long-term air quality trends analysis.

Gilroy is situated 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 a mix of urban, agricultural, and industrial sources, making air quality monitoring critical. The station's siting is representative of suburban exposure, and its parameter coverage includes criteria pollutants relevant to local health and regulatory compliance.