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Summary

The Department of Environment in Nepal has set up 27 air quality monitoring stations since 2016 to assess air quality across the country. This report analyzes PM2.5, PM10, and TSP data from 11 stations in four provinces for 2022. Data processing and analysis were conducted using various tools, with quality control measures applied. The report reveals spatial and temporal variations in air quality, with poor conditions observed especially in winter and pre-monsoon seasons. The analysis also highlights the exceedance of National Ambient Air Quality Standards for certain pollutants, indicating the severity of the issue. Various sources of pollution, including construction activities,