Concentration of particulate matter and atmospheric pollutants in the residential area of Kathmandu Valley: A case study of March-April 2021 forest fire events.

Forest fires have become more intense and frequent in recently changing climates. The wide variety of pollutants released by forest fire include greenhouse gases, photochemically reactive compounds, and fine and coarse particulate matter. This study investigated the impact of forest fire events on air quality in the Kathmandu Valley during March-April 2021 using ground air quality monitoring stations and satellite data.