California Expands Mobile Air Quality Monitoring Program Statewide

Image source: Aclima

Published on March 5, 2025

California is expanding its mobile air quality monitoring program, deploying Aclima vehicles equipped with advanced pollution sensors to 64 cities across the state. This initiative follows a successful pilot in West Oakland, where targeted interventions led to significant air quality improvements.

Data from West Oakland shows a 31% reduction in diesel particulate matter since 2017, fewer asthma-related emergency room visits among young children, and a decline in cancer-related deaths linked to air pollution. The program, led by Silicon Valley-based Aclima, aims to replicate these successes statewide.

Aclima’s high-accuracy mobile sensors map pollution levels at a hyper-local level, providing detailed data to inform policy changes. The company, which won a $27 million contract with the California Air Resources Board, will use a fleet of low-emission and electric vehicles to collect data over the next nine months.

The program emphasizes community engagement, with half of the drivers hired from the areas being studied. Data collected will support future air quality regulations and community-led initiatives, aiming to empower more neighborhoods to advocate for cleaner air.

The statewide rollout is set to begin in the coming months, with a focus on high-risk areas across the Bay Area, Central Valley, and Southern California.

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