Air District Operations

The Air District is taking steps to ensure Bay Area air quality and public health are protected while the shelter-in-place orders are in effect. Permits for businesses adjusting operations to aid in the public health response will also be expedited. Read more... | en Español

Air Quality Advisory

On Friday and Saturday, smoke from the August Complex Fire may impact the North Bay and parts of the East Bay, causing smoky and hazy skies. There is no Spare the Air Alert in effect and air quality is not expected to be unhealthy. See our hourly air quality data for the most up-to-date information, as well as Press Releases@AirDistrict, and our Wildfire Safety Tips web page.  Sign up for Bay Area Air Alerts.  en Español

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.

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General Information


Meteorology & Measurements
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Spare the Air Status
No Wood Burning
Spare the Air Status
  • Saturday,

    No Spare the Air Alert in Effect

Last Updated: 8/20/2014