Chiang Mai, a popular tourist destination in northern Thailand, has been ranked the world’s most polluted city with air quality readings of 216, which is considered “very unhealthy.” This has caused concern among tour operators, with bookings down 50%. The province has also seen a rise in respiratory diseases, with many experiencing chest pain or prolonged coughs. The pollution is caused by burning used to clear land for agriculture, and some businesses have reported significant drops in bookings during the peak burning season. The situation highlights the need for a coordinated effort from governments, businesses, and individuals to address the problem of air pollution. Without action, rates of disease are likely to worsen, leading to a decline in quality of life and potentially more severe health outcomes.