Environment & Climate
NASA's MAIA project tracks air pollution in Addis Ababa with ground-based sensors
A three-year monitoring effort in Ethiopia's capital highlights daily and seasonal variations in fine particulate matter ahead of a planned satellite launch.
The short version
- NASA's Multi-Angle Imager for Aerosols (MAIA) mission deployed 10 ground-based air sensors across Addis Ababa to monitor fine particulate pollution (PM2.5) and black carbon over a three-year period.
- The sensor network revealed localized pollution variations from 20 to 40 micrograms per cubic meter, with noticeable spikes during rush-hour traffic and holiday events.
- The ground-based network is part of a broader study targeting a dozen global regions, designed to complement a space observatory scheduled to launch no earlier than late 2027.
Key facts
- NASA's MAIA mission installed 10 roof-mounted air sensors in Addis Ababa, Ethiopia, to collect three years of air quality data.[NASA News · NASA News]
- The sensors track fine particulate matter (PM2.5) and black carbon, showing concentration variations ranging between 20 and 40 micrograms per cubic meter across monitoring stations.[NASA News · NASA News]
- The MAIA mission focuses on a dozen urban regions globally, including Los Angeles, Atlanta, and Boston in the United States.[NASA News]
- The mission includes a space observatory built by NASA's Jet Propulsion Laboratory, which the Italian Space Agency plans to launch on an ASI satellite no earlier than late 2027.[NASA News]
- The 2025 State of Global Air Report estimates fine particulate matter pollution is associated with approximately 4.9 million excess deaths annually across the globe.[NASA News]
What remains uncertain
- The exact launch date for the Italian Space Agency satellite carrying the MAIA space observatory remains unconfirmed beyond the targeted window of no earlier than late 2027.[NASA News]