Patient numbers at Maharaj Nakhon Chiang Mai Hospital have risen to 1.5 times their normal level as the city’s prolonged air pollution crisis takes its toll, with doctors warning of both immediate and long-term health consequences. Professor Dr. Arintaya Phrommintikul, director of Maharaj Nakhon Chiang Mai Hospital, confirmed that PM2.5 levels exceeding safety standards are having a measurable