Overview
San Francisco - Ellis St. is an operational air monitoring station in San Francisco, California, operated by the Bay Area Air Quality Management District. It is part of the US EPA Air Quality System network.
San Francisco - Ellis St. is an air monitoring station located at 939 Ellis Street in San Francisco, California. Operated by the Bay Area Air Quality Management District, it is part of the US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other parameters to assess ambient air quality. The station operates under the regulatory framework of the US Clean Air Act and EPA standards. Typical air monitoring stations in California measure pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The Bay Area Air Quality Management District ensures siting representativeness and data quality through rigorous protocols. This station contributes to the regional air quality monitoring network, providing data used for public health advisories, regulatory compliance, and research. Its location in an urban area helps assess population exposure to air pollutants, supporting efforts to improve air quality in San Francisco.
Environmental context
San Francisco's air quality is influenced by traffic emissions, industrial activities, and marine influences. The station's urban siting provides representative data for population exposure assessment. Monitoring criteria pollutants and meteorological parameters helps track compliance with National Ambient Air Quality Standards (NAAQS) and supports local air quality management strategies.
Frequently asked questions
The station is located at 939 Ellis Street, San Francisco, California, USA.
As part of the EPA AQS network, it typically measures criteria pollutants such as ozone, PM2.5, PM10, nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead, along with meteorological parameters.
The station is operated by the Bay Area Air Quality Management District, the regional agency responsible for air quality regulation in the San Francisco Bay Area.
Air monitoring in the US is governed by the Clean Air Act and implemented by the EPA through the Air Quality System (AQS) network, which sets standards for monitoring methods, siting, and data reporting.
Urban air monitoring assesses population exposure to pollutants from traffic and industry, supports public health advisories, and helps track compliance with air quality standards to guide emission reduction strategies.
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