In many large cities, air quality is increasingly declining when many days have poor and bad AQI indexes, the concentration of fine dust is nearly twice the standard, air quality is showing a tendency to decline widely. There are even times when air pollution in large cities like Hanoi is the highest in the world.

The reason is that the sources of emissions into the air are not well controlled. These include emissions from vehicles; emissions from industrial production activities, waste burning; production activities of craft villages and emissions from construction works.

Currently, the solution of provinces and cities, including Tuyen Quang, is to build an early warning system for air pollution so that people can respond promptly; Strengthening the participation of stakeholders in air quality management through education - communication, cooperation with authorities, businesses, communities, and stakeholders. At the same time, developing an air quality management plan. Addressing challenges and effectively implementing solutions to reduce air pollution is both an urgent requirement and an important driving force to promote sustainable development for the capital, contributing to Vietnam's common efforts to fulfill its strong commitment to respond to climate change, towards the goal of "0" emissions - Net Zero by 2050.