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Air pollution is a major environmental treat that concerns public health. It has been proposed that reduction in air pollution levels may lessen the global burden of disease. Particulate matter is one of the major air pollutants. One of the sources of particulate matter is dust. Particulate matter associated with heavy metal is dangerous to human health. Trees are known for their ability to purify air by releasing oxygen and also for absorbing air pollutants such as sulphur dioxide, nitrogenoxides, carbon-dioxide as well as suspended particle matter. Thus trees naturally cleanse air and capture dust. Various morphological features of plants attribute to their ability to trap/accumulate particulate matter such as roughness of leaf surface; epidermal cell arrangement; frequency, length, size and density of trichomes ; Phyllotaxy; wax deposition, distribution of stomata and petiole length. In this study the ability of roadside trees to accumulate dust on their leaves is evaluated. Species-wise analysis of dust accumulation shows that Broussonetia papyrifera is the highest accumulator of dust at 3.2492 g/m². Ficus elastica was found to be least efficient in dust accumulation at 0.3722 g/m²

Keywords: Particulate matter, air pollution, roadside trees, dust accumulation.