Chiang Mai, Thailand's tourist jewel, is the most polluted city in the world. The level of microparticles reached this Friday in Chiang Mai 35 times the limit recommended by the World Health Organization (WHO) Prime Minister Srettha Thavisin approved a clean air bill in January, in response to the increasingly serious consequences of this air pollution on the health of Thais.
In 2023, according to an official study, 10 million of them consulted a doctor in relation to respiratory problems.