“Every day, I witness the severe impact of poor air quality on my community,” Tedy Mwendwa explained. “Using my expertise in electrical engineering, I felt compelled to create change.”

In the heart of Africa, amidst bustling cities and vibrant rural landscapes, Mwendwa is pioneering a movement for cleaner air in Kenya. With a professional foundation in electrical engineering and a passion for environmental stewardship, Mwendwa's deployment of a low-cost air quality sensor in Kenya’s capital city, Nairobi, marks a pivotal step in revealing and addressing pollution and bridging critical gaps in Africa’s air quality data.

Nairobi's leap towards cleaner air

In late 2021, Mwendwa established an air quality station. Set up along one of Nairobi’s busy thoroughfares, the station gathers data on pollutants from sources like vehicular exhaust and biomass burning.

“It's about leveraging technology to unveil the hidden dangers of pollution,” Mwendwa said. “Empowering our community with this data is crucial for driving action and advocating for sustainable solutions. Without data, we remain in the dark.”

The challenge of air quality monitoring in Africa

Despite the increasing efforts to monitor air quality globally, Africa remains one of the most underrepresented continents in terms of air quality data. According to the 2023 World Air Quality Report, a third of Africa’s population is still without access to reliable air quality data.

While coverage has expanded to include more African countries in recent years, there are still vast areas without sufficient data. For example, countries like Niger and Sudan remain without publicly available monitoring data.

Air pollution is a major health threat, causing an estimated seven million premature deaths worldwide each year. Without accurate data, it is challenging to address the sources and impacts of air pollution effectively. Grassroots efforts like Mwendwa's are crucial in filling these data gaps, providing models for further projects and inspiring broader initiatives.

Harnessing technology for a healthier tomorrow

Utilizing an AirVisual Outdoor air quality monitor, Mwendwa’s station gathers critical real-time data. “The AirVisual sensor was easy to deploy and requires little maintenance, even in our somewhat extreme conditions with limited resources,” he said.

The project, though small, is already making a difference in the community. “By sharing a link to the AirVisual Platform and using the app, we can easily get our data to students nationwide, enabling them to conduct their own research on pollution,” he said. The data has also been used to inform parents with small children of the effects of poor air quality. "They need to understand that this data can help give them a better life," Mwendwa said.

Cultivating environmental consciousness

Mwendwa envisions a future where air quality stations span Africa, fostering a culture of environmental awareness and proactive health management. “The data my station is gathering empowers students to conduct community research, highlighting pollution's impact and fostering greater understanding,” he said. “This awareness can significantly influence the general population."

Mwendwa plans further collaborations with local governments, communities, and international bodies, with this initial project laying a foundation for sustainable environmental policies and practices. “Our goal is to illuminate the unseen threats of pollution through technology,” he said. “Providing our community, and beyond, with this data, equips them to advocate for sustainable solutions essential for a healthier future. Without data, we are navigating blindly.”

The takeaway

Engineer-turned-citizen scientist Tedy Mwendwa leverages technology and collaboration to transform Kenya’s air quality landscape. His project is an invitation to communities and policymakers to engage in a similar quest for healthier environments.

Mwendwa's efforts symbolize more than geographic growth—they embody the momentum of a global movement dedicated to clean air. His work exemplifies uniting technology, data, and collective engagement to tackle one of our era's most pressing challenges.

Achieving cleaner air is a communal endeavor, demanding innovation and cooperation. Mwendwa's project is a rallying cry to all, inviting participation in crafting a healthier, sustainable future for generations to come.