California Air Resources Board

From 1999 to 2013 CARB published the California Almanac of Emissions and Air Quality. The Almanac contains 20-year trend summaries of air quality and emissions data for five criteria pollutants: ozone, PM₁₀, CO, NO₂, and SO₂. Data are summarized for the State as a whole and for the five most populated air basins (South Coast, San Francisco Bay Area, San Joaquin Valley, San Diego, and Sacramento Valley).

In addition to information on criteria pollutants, the Almanac provides information on air quality and emissions for the following ten toxic air contaminants: acetaldehyde, benzene, 1,3-butadiene, carbon tetrachloride, hexavalent chromium, para-dichlorobenzene, formaldehyde, methylene chloride, perchloroethylene, and diesel particulate matter. Similar to the criteria pollutant data, the toxic air contaminant data are also summarized for the State and for each of the five most populated air basins.

The most recent edition of the Almanac is linked below. That edition, the California Almanac of Emissions and Air Quality - 2013 Edition spans the years 1992 through 2011.

California Almanac of Emissions and Air Quality - 2013 Edition

Contacts

For general information about the almanac or questions about the air quality data, contact Paul Andrews at (916) 327-7609.

For questions about the emissions data, contact Emissions Inventory Branch at (916) 323-8461.