• South Coast Air Quality Management Dist.

    • GOVT - AGENCIES
    21865 COPLEY DR.
    DIAMOND BAR, CA 91765
    (909) 396-3199
    800-CUT-SMOG
    • About

      SCAQMD is the air pollution control agency for all of Orange County and the urban portions of Los Angeles, Riverside and San Bernardino counties, among the smoggiest regions of the U.S. We are committed to protecting the health of residents, while remaining sensitive to businesses.