Pacoima’s Fight Against Air Pollution: Community Sensors Illuminate the Crisis

Chris Palmer, Climate Reporter
5 Min Read
⏱️ 4 min read

In the heart of Los Angeles’ San Fernando Valley, the residents of Pacoima are taking a stand against hazardous air pollution, using a network of advanced sensors to monitor air quality in real-time. This initiative, spearheaded by the local organisation Pacoima Beautiful, aims to combat the detrimental effects of pollution in a community burdened by highways and heavy industry.

A Community Under Siege

Pacoima is one of the most densely populated areas in Los Angeles County, home to around 81,000 residents crammed into just seven square miles. This multicultural, working-class neighbourhood is encircled by major highways, including Interstate 5 and Highway 118, and is significantly impacted by nearby factories, landfills, and a regional airport. As a result, Pacoima frequently experiences air quality far worse than other areas just a few miles away.

Jose Luis Salas, a long-time resident, has witnessed the decline in air quality firsthand. “Some days, with no fog or breeze, you can still see smoke in the streets,” he remarked, adding that outdoor activities have often left him breathless. The California Environmental Protection Agency classifies Pacoima as one of the state’s most environmentally burdened communities, with nearly 9% of its population suffering from asthma.

Harnessing Technology for Change

In response to this urgent crisis, Pacoima Beautiful has initiated a community-driven air quality monitoring programme. Shance Taylor, an environmental project manager, is at the forefront of this effort, installing Aeroqual sensors on the homes of local residents, including Salas. These devices collect critical data on pollutants such as PM2.5 and ozone, allowing residents to track their air quality in real-time.

“This hyperlocal data is vital,” explained Paloma Giottonini, an urban planning professor involved with the programme. “The nearest official monitoring station is miles away and doesn’t accurately represent what we experience on the ground.” With the data collected, community members can advocate for necessary changes to improve their environment. “They can present this evidence to the city and demand action,” Giottonini added.

Building a Cleaner Future

Pacoima Beautiful, founded in 1996 by a group of concerned mothers, has evolved from its initial focus on litter and toxic smells to tackling a wide array of environmental issues, including the ongoing climate crisis. Taylor noted that the organisation has implemented various projects, from cool pavement initiatives that reduce ground temperatures to community gardens that provide fresh produce.

In addition to the Aeroqual sensors, Pacoima Beautiful has also deployed PurpleAir monitors and portable AirBeam devices that residents can carry to map their personal air quality. These efforts have revealed alarming disparities in pollution levels across different neighbourhoods, particularly affecting low-income areas where many children suffer from asthma.

Amanda Ortega, a teacher in Los Angeles, participated in the Air Ambassadors programme, discovering high pollution levels along routes frequented by her students. “Seeing the data made me worry for their health,” she shared, highlighting the stark reality of environmental injustice in the region.

The Road Ahead

As climate change intensifies, the need for effective air quality monitoring becomes increasingly critical. The technology used in Pacoima is not only reshaping community awareness but also influencing policy decisions. Researchers and activists are advocating for a broader network of sensors to ensure that air quality data is accessible to all, particularly in vulnerable communities.

Michael Mendez, a UC Irvine professor who has studied air quality in Pacoima, noted the importance of accurate data in shaping public health responses. “Even in California, which is often seen as a leader in air quality management, our systems are outdated,” he stated. “Communities need real-time data to make informed decisions.”

Why it Matters

Pacoima’s grassroots air quality monitoring initiative exemplifies the power of community action in the face of environmental adversity. As residents take control of their health and advocate for cleaner air, they set a precedent for other communities grappling with similar challenges. The data gathered not only illuminates the urgent need for systemic change but empowers individuals to demand accountability and foster a healthier, more sustainable future for generations to come. In a world where climate-related issues are escalating, Pacoima’s fight against pollution serves as a vital blueprint for collective action and resilience.

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Chris Palmer is a dedicated climate reporter who has covered environmental policy, extreme weather events, and the energy transition for seven years. A trained meteorologist with a journalism qualification from City University London, he combines scientific understanding with compelling storytelling. He has reported from UN climate summits and covered major environmental disasters across Europe.
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