SMMI is part of California Climate Investments, a statewide initiative that puts billions of Cap-and-Invest, formerly known as Cap-and-Trade, dollars to work reducing greenhouse gas emissions, strengthening the economy, and improving public health and the environment — particularly in disadvantaged communities.
Statewide Mobile Monitoring Initiative
May 2026 Status Update: SMMI mobile monitoring wrapped up successfully in March 2026, capturing billions of air quality measurements across California over a nine‑month period. We are now underway with the data analysis phase, and a public webinar will be scheduled soon to share key monitoring accomplishments and outline next steps.
More about this program
Access approved final CAMP documents
Reporting of pollutants exceeding thresholds
Questions & Answers