STATEWIDE MOBILE MONITORING INITIATIVE
Mapping California's Air
Aclima’s $27 million Statewide Mobile Monitoring Initiative (SMMI), in partnership with the California Air Resources Board, maps neighborhood air pollution block-by-block.
Using over 40 vehicles equipped with sensors, the project collects real-time data on various pollutants, highlighting differences in air quality within communities-especially those most affected by pollution.
Covering more than 950,000 miles and reaching 5.2 million residents in 64 communities, SMMI provides valuable data for both regulators and residents, while also creating about 100 local jobs.
Cap-and-Trade in Action
Through our partnership with the California Air Resources Board (CARB), we’re using advanced tech to map pollution and protect communities putting cap-and-trade dollars to work in the state of California.
Find Your CAMP
Click on your community to learn more about your Community Air Monitoring Plan (CAMP), or see our full list below.

North Bay Communities
Marin County
Solano County
Sonoma County
San Francisco Communities
San Francisco County
East Bay Communities
Alameda County
- San Leandro - San Leandro 2050
- West Berkeley - Just Cities
- Hayward - No Lead (Aclima)
- Greater Oakland - HOPE Collaborative
- Tri-Valley - Tri-Valley Air Quality Climate Alliance
Contra Costa County
Peninsula & South Bay Communities
San Mateo County
- South San Francisco - Rise South City
- Redwood City - El Concilio
- East Palo Alto - Acterra
- North Central San Mateo - El Concilio
Santa Clara County
Los Angeles Communities
Los Angeles County
- Compton, Rancho Dominguez, Willowbrook, Lynwood - Breathe SoCal
- Inglewood, Hawthorne, Westmont, Vermont - Girl Plus Environment
- Paramount, North Long Beach - Breathe SoCal
- Westlake, Korea Town, Mid-city, Mid-Wilshire - Breathe SoCal
- Gardena, Alondra Park, Lawndale - The Niles Foundation
- Pacoima, North Hollywood, Sun Valley, San Fernando, Sylmar - Pacoima Beautiful
- Van Nuys - Pacoima Beautiful
- El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, Bassett - Day One
- Maywood, Commerce, Vernon, Bell - Breathe SoCal
- Torrance - The Niles Foundation
Orange County Communities
Orange County
Riverside Communities
Riverside County
San Bernardino Communities
San Bernardino County
Northern San Joaquin Valley Communities
Stanislaus County
- West Stanislaus County - Valley Improvement Projects
- Southwest West Modesto - Valley Improvement Projects
- South Modesto - Valley Improvement Projects
Merced County
Central San Joaquin Valley Communities
Fresno County
Kings County
Madera County
- Fairmead - Leadership Counsel
- South Madera - La Vina, Parkwood, Parksdale, Borden, Italian Swiss Colony, Iragose, and Ripperday - Madera Coalition for Community Justice
Tulare County
Southern San Joaquin Valley Communities
Kern County
Imperial Communities
Imperial County
What’s in the air we breathe?
No matter where we live, human activity creates many air pollutants. When government regulators like CARB and communities know which pollutants are in the air, where those pollutants’ levels are highest, and where they’re coming from, they can work together to reduce emissions and deliver cleaner air.
Learn more about out how Aclima maps air.

A statewide program directed by community voices
64 consistently nominated communities
Directed by community voices
Comprehensive mapping of pollutants
Track and prioritize actions to reduce emissions & exposure
Target investments
Protect public health, reduce emissions
Community Partners
To learn more about the SMMI project, contact CARB at smmi@arb.ca.gov
Project Expert Group

For more information, contact the Aclima team at carb-team@aclima.earth
View the PEG's June meeting agenda here
Bay Area Communities
San Francisco County
Alameda County
- San Leandro - San Leandro 2050
- West Berkeley - Just Cities
- Hayward - No Lead (Aclima)
- Greater Oakland - HOPE Collaborative
- Tri-Valley - Tri-Valley Air Quality Climate Alliance
Contra Costa County
- Tri-Valley - Tri-Valley Air Quality Climate Alliance
- Rodeo to parts of Crockett - Our Children's Earth Foundation (for Rodeo Citizens Association)
- East Contra Costa County - Sustainable Contra Costa
Marin County
Solano County
Sonoma County
San Joaquin Valley Communities
Stanislaus County
- West Stanislaus County - Valley Improvement Projects
- Southwest West Modesto - Valley Improvement Projects
- South Modesto - Valley Improvement Projects
Merced County
Fresno County
Kings County
Madera County
- Fairmead - Leadership Counsel
- South Madera - La Vina, Parkwood, Parksdale, Borden, Italian Swiss Colony, Iragose, and Ripperday - Madera Coalition for Community Justice
Tulare County
Kern County
Los Angeles Communities
Los Angeles County
- Compton, Rancho Dominguez, Willowbrook, Lynwood - Breathe SoCal
- Inglewood, Hawthorne, Westmont, Vermont - Girl Plus Environment
- Paramount, North Long Beach - Breathe SoCal
- Westlake, Korea Town, Mid-city, Mid-Wilshire - Breathe SoCal
- Gardena, Alondra Park, Lawndale - The Niles Foundation
- Pacoima, North Hollywood, Sun Valley, San Fernando, Sylmar - Pacoima Beautiful
- Van Nuys - Pacoima Beautiful
- El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, Bassett - Day One
- Maywood, Commerce, Vernon, Bell - Breathe SoCal
- Torrance - The Niles Foundation
San Bernardino Communities
San Bernardino County
Orange County Communities
Orange County
Riverside Communities
Riverside County
Imperial Communities
Imperial County