South Coast AQMD is a regulatory agency dedicated to improving air quality in large areas of Los Angeles, Orange, Riverside, and San Bernardino counties, including the Coachella Valley. With a mission to clean the air and protect the health of all residents in the South Coast Air District, they implement practical and innovative strategies. As home to over 17 million people, 44% of California's population, the region faces significant air pollution challenges.

South Coast AQMD has been at the forefront of air pollution reduction efforts since 1947, striving to combat the adverse effects of air pollution on public health. As an agency, South Coast AQMD primarily focuses on controlling emissions from stationary sources of air pollution, such as power plants, refineries, and even consumer products. They issue permits, conduct inspections, and enforce rules to ensure compliance with air quality regulations.

The agency operates a network of air quality monitors and provides the public with updates on air quality conditions. Over the years, their efforts have led to significant improvements in air quality, even with a growing population and increased vehicle emissions. Although progress has been made, South Coast AQMD acknowledges that there is still work to be done to meet federal and state clean air standards.

They rely on a combination of evaluation fees, operating fees, emissions fees, grants, and investments to fund their efforts. With the introduction of stricter standards, they continue to address the challenges posed by air pollution and strive to provide a healthier environment for the region's residents