Many Asian cities are known for having air pollution problems due to the compact cities and the heavy population. However, there are cities all around the world that have air problems which result in breathing problems. The air problems are due to the major cities having a lot of factories and cars. In Bangkok, specifically, their air quality is categorized as being extremely unhealthy. This is due to the pollution caused by factories and people.
This is not to say that Bangkok’s air quality is worse than other cities around the world that are about the same size. Many major cities around the world experience the same problem. It is easy to detect. You merely only have to look at the sky across the skyline at the smog.