Air pollution is universally recognized as one of the most pressing environmental challenges in the Asia-Pacific region. In recent years, this impact has risen at an alarming rate and has resulted in an increased premature death and threatened the livelihoods and sustainable development in region. This trend is expected to continue, particularly in fast-growing cities with exponentially increasing urban populations. Though biomass burning is a significant air pollution source in Chiang Mai within the northern region, traffic-related air pollution has also become one of the major sources of air pollutants such as NO2, CO, and SO. This paper comprehensively examines the relationship between traffic congestion effect and ambient air pollution through conducting quantitative modelling, correlational analysis, linear regression analysis, and Copula analysis
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