International Science Community Association International Research Journal of Environmental Sciences 2319-1414 11 4 2022 10 22 An Assessment of Ambient Air Quality for Environment in Kathmandu Valley, Nepal 7 12 EN Dube Noel 1 Department of Geography and Environmental Studies, Zimbabwe Open University, Box 346, Gwanda, Zimbabwe Moyo Oliver 2 Rushumbe Primary School, Bag 9176, Mwenezi, Masvingo, Zimbabwe Shrestha Sushila Devi 1 Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu, Nepal > Research Paper 2021 12 12 2022 10 22 The growing vehicles, road widening activity were increased dust contamination, smokes in atmosphere which affect air quality of Kathmandu valley. It has a concern to improve for environment. The study was on ambient air quality monitored through field and laboratory analyses by using nine different parameters at different locations of Kathmandu valley. The particulate matters, PM10 ranged between 127 and 1193µg/m3 and PM2.5 ranged between 23 and 105µg/m3. The total suspended particles (TSP) at different location ranged between 240 and 1390µg/m3. These analytical values were higher than National Ambient Air Quality Standard values in Kathmandu. Gaseous pollutants like, SO2, NO2, benzene, lead, and ozone were mostly within acceptable levels. These particulate matters value could be minimized. The stable city is recommended to continue the air monitoring system and bring suitable environment along with developmental activities. The construction is being a successful program and makes different changes. These are promoting air quality and environment. Copyright@ International Science Community Association