SMMI-Community-El Monte-South El Monte-Avocado Heights-Hacienda Heights-La Puente-Bassett

El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett are neighboring, diverse communities in the San Gabriel Valley region of Los Angeles County, located within the South Coast Air Quality Management District. These areas are home to a vibrant mix of Hispanic, Asian, and multilingual families, reflecting the cultural richness of the region.

Residents face persistent air quality challenges due to heavy freeway traffic, nearby industrial activity, and local sources such as waste facilities and warehouses. These pollution burdens contribute to high rates of asthma and other respiratory illnesses, especially among children and low-income households.

The district has teamed up with Aclima and the California Air Resources Board (CARB) to launch a community air monitoring project guiding future actions as a part of SMMI. Using Aclima’s advanced sensors, the project collects detailed, block-by-block data on air quality throughout the community. This provides residents with clear information about local pollution and helps guide actions to improve air quality, focusing on the areas and people most affected.

In April 2025, residents, local organizations, and project partners met to discuss air quality concerns, shape the Community Air Monitoring Plan, and explore solutions for a healthier, more equitable future.

Community Air Monitoring Plan (CAMP)

Following a period of public review, we have revised the CAMP for El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett as of August 22, 2025. This is the final version of the CAMP and has been approved by CARB.

Download the updated version of El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett’s Community Air Monitoring Plan (CAMP) to read about how air quality will be monitored.

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El Plan de Monitoreo de Calidad del Aire de la Communidad (CAMP)

Tras un período de revisión pública, hemos revisado el CAMP de El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente y Bassett a partir del 22 de agosto de 2025. Esta es la versión final del CAMP y ha sido aprobada por CARB.

Descargue la versión actualizada del Programa Comunitario de Monitoreo del Aire de El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett para leer sobre cómo se monitoreará la calidad del aire.

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Community Air Monitoring Plan (CAMP)

The Community Air Monitoring Plan (CAMP) for El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett is a partnership between Day One, Aclima, and the California Air Resources Board.

The initial El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, and Bassett Community Air Monitoring Plan (CAMP) was published on May 19, 2025. You can download the original version by clicking the button below. To read the final CAMP, please navigate to the "Final Approved CAMP" button on the right.

Download Previous Draft

El Plan de Monitoreo de Calidad del Aire de la Communidad (CAMP)

El Plan Comunitario de Monitoreo del Aire (CAMP) de El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente, y Bassett es una asociación entre Day One, Aclima y el Consejo de Recursos del Aire de California.

El borrador anterior del Plan Comunitario de Monitoreo del Aire (CAMP) de El Monte, South El Monte, Avocado Heights, Hacienda Heights, La Puente y Bassett se publicó el 19 de mayo de 2025. Puede descargar la versión original haciendo clic en el botón de abajo. Para leer el CAMP actualizado, navegue hasta el botón "CAMP Final Aprobado" situado a la derecha.

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Day One

Day One is a California-based nonprofit dedicated to advancing public health, environmental justice, and youth leadership in underserved communities. Through education, advocacy, and community programs, Day One empowers young people and families to create healthier, more equitable neighborhoods across the San Gabriel Valley and beyond.

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El Monte-South El Monte-Avocado Heights-Hacienda Heights-La Puente-Bassett

Aclima and San Leandro 2050 launch SMMI in San Leandro

Community Air Monitoring Plan (CAMP)

El Plan de Monitoreo de Calidad del Aire de la Communidad (CAMP)

Community Air Monitoring Plan (CAMP)

El Plan de Monitoreo de Calidad del Aire de la Communidad (CAMP)

Day One

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