Emissions Inventories

Learn about the emissions inventories the Air District prepares for criteria air pollutants, greenhouse gases, and toxic air contaminants, for federal, state, regional, and local uses.

Emissions Inventories

Emissions inventories are essential for air quality planning and management. An emissions inventory is a detailed list of emission estimates for air pollution sources associated with specific activities for a specific time period. The Air District compiles regional and county inventories that estimate Bay Area emissions of criteria air pollutantsgreenhouse gases, and toxic air contaminants for past, present, and future years.  The Air District also periodically conducts special studies to improve emission estimates or to assess emission levels for certain source areas.

General Information


Meteorology & Measurements
Air Monitoring


Spare the Air Status
Spare the Air Status
  • Saturday,

    No Spare the Air Alert in Effect

Last Updated: 8/20/2014