Outdoor Air Quality

Reducing Exposures from Air Pollution



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Outdoor air quality refers to the air surrounding us when we are outdoors.  Also known as ambient air quality, it is affected by weather conditions, wind, and the distance from major sources of pollution such as industrial facilities and the traffic on nearby freeways.

San Francisco promotes use of cleaner, alternative fuels. We encourage private and public fleets to use biodiesel fuel to help reduce toxic air contaminants from diesel vehicles that can be harmful to public health.Read>
SF Environment conducted a study of diesel pollution sources in the Bayview Hunters Point neighborhood.Read>

Additional Information for Outdoor Air Quality

Clean Construction Ordinance
In April 2007, the City and County of San Francisco adopted an Ordinance requiring public projects to reduce emissions at construction sites starting in 2009. In March 2015, the City expanded the existing Ordinance to require public projects to further reduce emissions at construction sites in certain areas with high levels of background concentrations of air pollutants.