California Air Districts Report
2025 Enforcement Activity
California’s 35 local air districts play a critical role in protecting public health by monitoring air quality, regulating stationary sources, issuing permits, investigating complaints, and enforcing air pollution control requirements.
In calendar year 2025, California air districts reported 113,770 total inspections and investigations across a wide range of compliance programs. This work included inspections of permitted and registered sources, complaint investigations, asbestos renovation and demolition inspections, source test observations, portable equipment inspections, and investigations of equipment breakdowns.
Air districts identified 19,461 air pollution control violations in 2025, an increase of 1,975 violations from the previous reporting year. These enforcement efforts help ensure compliance with air quality rules, maintain a level playing field for regulated businesses, and protect communities from the harmful effects of air pollution.
Districts reporting enforcement data represented approximately 38.8 million Californians, or 99% of the state’s population, demonstrating the broad statewide reach of local air district compliance and enforcement programs.
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