The Bay Area Air District (Air District) is a regional government agency. The Air District’s jurisdiction encompasses all of seven counties – Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo and Santa Clara, and portions of two other counties – southwestern Solano and southern Sonoma. The Air District’s mission is to protect and improve public health, air quality, and the global climate.
The Bay Area Air District (Air District) is a regional government agency. The Air District’s jurisdiction encompasses all of seven counties – Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo and Santa Clara, and portions of two other counties – southwestern Solano and southern Sonoma. The Air District’s mission is to protect and improve public health, air quality, and the global climate.