Standing at Wat Phra That Doi Suthep last March, I watched a French couple remove their face masks to take photos. “The guidebook said March was perfect for Chiang Mai,” the woman said, coughing slightly as haze obscured the city view below. Her partner checked his phone’s air quality app. “PM2.5 is 187. That’s ‘very … Continue reading Chiang Mai Guide 2026: Northern Thailand’s Cultural Heart