There’s no doubt that Chiang Mai is a popular tourist destination in Thailand, but in recent years it has gained even more popularity, forcing the tight crowded city to expand. This increase in tourism has lead to the growth of funds that people living there have, this has lead to more privately owned vehicles which means more cars on the already busy streets. It is a common sight in Chiang Mai to see people walking around with surgical masks on to avoid breathing in the exhaust fumes that hang in the air. The article states “Public hospitals are overwhelmed with patients needing treatment for respiratory illness.” This is caused in part by the increase of cars on the road, but also the overall warming of the city during rush hour, which allows the air to become even more saturated with pollutants.
Read more about this issue and what surrounding communities are doing to combat air pollution at http://thediplomat.com/2017/07/can-chiang-mai-avoid-the-environmental-costs-of-development/