GIS APPLICATION TO BUILD AIR POLLUTION MAP OF THAI NGUYEN CITY

Abstract

Thai Nguyen is a key player in the national industrialization and modernization effort, attracting significant domestic and international investment. However, the city faces challenges, including pressure to manage environmental pollution, particularly air pollution. This study aims to assess the current state of air pollution in Thai Nguyen city and utilize GIS to create an air pollution map. We collected data from 12 observation points within the city, applying the air quality index calculation method and GIS technology to develop the air pollution map. The results indicate that most observation points have values of air quality index within the permissible range of 50-100, suggesting that the air quality in Thai Nguyen city generally according to Vietnamese Standard. However, the GIS-based interpolation map of the city's air quality for 2022 reveals that most areas are marked orange, values of air quality index values between 100-200. This suggests moderate air quality, advising sensitive groups to limit outdoor activities.