Pollution due to atmospheric particulates is a major cause of respiratory illnesses such as asthma particularly in California’s Central Valley which contains five of the ten most polluted cities in the United States. Real-time monitoring of the size and density of airborne particles is important for providing health advisories. Traditional monitoring techniques provide only sparse, localized measurements. This proposal seeks seed funding to investigate terrestrial remote sensing as a novel low-cost wide-coverage alternate to current approaches for monitoring atmospheric particulates.