Ambient Air Monitoring Network

Learn about the Air District's ambient air monitoring network and special air quality studies.

The Air District maintains one of the most comprehensive air quality monitoring networks in the country, consisting of over 30 stations distributed among the nine Bay Area counties.

This network measures concentrations of pollutants for which health-based ambient air quality standards have been set by the U.S. Environmental Protection Agency and the California Air Resources Board. The network also measures concentrations of various pollutants designated as Toxic Air Contaminants by the state of California.

This information is used to determine compliance with state and federal air quality standards, prepare air quality forecasts, develop air quality plans, provide information for permit modeling, prepare environmental impact reports, and track air quality trends.

Pollutants measured by the monitoring network include:

  • Ground-level ozone
  • Carbon monoxide
  • Nitrogen oxides
  • Sulfur dioxide/oxides
  • Particulate matter
  • Hydrogen sulfide

Red de monitoreo del aire del ambiente

El Distrito opera una red de monitoreo del aire del ambiente de más de 30 estaciones y vigila su estado de funcionamiento, mantenimiento y control de calidad. La red de monitoreo recolecta datos locales de la calidad del aire, que se utilizan para muchos fines importantes, incluidos:

  • determinar el cumplimiento de los estándares federales y estatales sobre la calidad del aire
  • pronósticos sobre la calidad del aire
  • modelado del Plan de Aire Limpio
  • modelado del permiso para prevención de deterioro significativo
  • informes sobre el impacto medioambiental
  • proporcionar información sobre la calidad del aire local y regional y las tendencias de la calidad del aire

Los proyectos de muestreo, tales como muestreo de especies de PM2.5 y estudios a corto plazo en comunidades específicas, proporcionan datos para el desarrollo de planes de calidad del aire, regulaciones actualizadas y para ampliar nuestro entendimiento sobre la calidad del aire en el Área de la Bahía.

Entre los contaminantes medidos por la red de monitoreo se incluyen:

  • ozono a nivel del suelo
  • monóxido de carbono
  • óxidos nítricos
  • óxidos/dióxido de azufre
  • materia particulada
  • sulfuro de hidrógeno

Plan de Red de Monitoreo del Aire 2014

El Distrito para el Control de la Calidad del Aire del Área de la Bahía publicará su Informe de redes de monitoreo del aire del ambiente más reciente en julio de 2015. El informe describe la red de monitoreo del aire del Distrito de 2014. También describe los objetivos de la red de monitoreo y enumera los cambios propuestos a la red para los próximos 18 meses. Los cambios propuestos pueden encontrarse en la sección titulada Modificaciones propuestas a la red en 2015-2016. Describe los objetivos de la red de monitoreo y los cambios propuestos que se pretende que ocurran antes del 30 de junio de 2015.

La publicación del siguiente Informe de redes de monitoreo del aire del ambiente está programada para julio de 2016.

Plan de Red Anual 2014

El Distrito solicitó comentarios del público sobre los cambios propuestos a la red de monitoreo del aire. El periodo de comentarios públicos terminó el 30 de junio de 2015.

2017 Air Monitoring Network Plan

The Air District released its latest Ambient Air Monitoring Network Report in July 2018. The report described the Air District’s air monitoring network for 2017. It also presented the objectives of the monitoring network and listed proposed changes to the network planned to occur before June 30, 2019. The proposed changes may be found in the section titled Proposed Modifications to Network in 2018-2019. The Air District solicited comments from the public on these proposed changes to the air monitoring network. The public comment period ended in June of 2018.

2016 Air Monitoring Network Plan

The Air District released the 2015 Ambient Air Monitoring Network Report in July 2016. The report described the District’s air monitoring network for 2016. It also presented the objectives of the monitoring network and listed proposed changes to the network planned to occur before June 30, 2018. The proposed changes may be found in the section titled Proposed Modifications to Network in 2017-2018. The Air District solicited comments from the public on these proposed changes to the air monitoring network. The public comment period ended in June of 2017.

Sulfur Dioxide Data Requirements Rule Compliance Information

On March 18, 2016, the U.S. Environmental Protection Agency sent a letter to the California Air Resources Board, informing the state that they considered three sources in Martinez, California, to be aggregated with respect to triggering compliance with the sulfur dioxide Data Requirements Rule ambient air characterization requirements. These sources are the Shell and Tesoro refineries and the Eco Services sulfur recovery plant. 

The Air District prepared an analysis outlining the proposed compliance with the sulfur dioxide Data Requirements Rule through ambient air monitoring. The Air District solicited comments from the public on this analysis from September 29 through October 31, 2016, and submitted it to the EPA. The EPA approved this approach on December 6, 2016. This information will be included in future Ambient Air Monitoring Network Reports.

2015 Air Monitoring Network Plan

The Air District released its latest  Ambient Air Monitoring Network Report in July 2016. The report describes the District’s air monitoring network for 2015. It also describes the objectives of the monitoring network and lists proposed changes to the network planned to occur before June 30, 2017. The proposed changes may be found in the section titled Proposed Modifications to Network in 2016-2017. The District solicited comments from the public on these proposed changes to the air monitoring network. The public comment period ended June 25, 2016.

2014 Air Monitoring Network Plan

The Air District released the 2014 Ambient Air Monitoring Network Plan in 2015. The report described the District’s air monitoring network for 2014,  the objectives of the monitoring network, and proposed changes to the network. The proposed changes may be found in the section titled Proposed Modifications to Network in 2015-2016. It describes the objectives of the monitoring network and proposed changes planned to occur before June 30, 2015. The District solicited comments from the public on proposed changes to the air monitoring network. The public comment period ended June 30, 2015.



Información general

415 749-4900


Monitoreo del Aire

415 749-4985

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Last Updated: 5/31/2019