Getting Down to Earth: Are Satellites Reliable for Measuring Air Pollutants that Cause Mortality in Low- and Middle-Income Countries?

Outdoor air pollution accounts for an estimated 4.2 million deaths worldwide, caused predominantly by exposure to fine aerosols. This report investigates the performance of satellites for predicting outdoor concentrations of PM2.5, the most harmful air pollutant to human health, in low- and middle-income countries.