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
The Statewide Mobile Monitoring Initiative (SMMI) is a $27 million legislative investment to generate the first ever block-by-block picture of air quality in over 60 consistently nominated AB 617 communities across California.
More about this program
SMMI Monitoring Conclusion Webinar
CARB and Aclima will hold a virtual monitoring conclusion webinar on June 8, 2026. In this webinar, we’ll share an overview of how mobile air monitoring was done, the methods and tools used, and the types of data collected. We’ll also walk through the next steps for analyzing the data and the timeline for releasing public visualization tools and the final dataset, along with key considerations and limitations that shape how the data can be used.
Questions & Answers
Reporting of pollutants exceeding thresholds
Access approved final CAMP documents