CHIANG RAI - People across northern Thailand woke up Sunday to another morning of dense, smoky air. As the annual burning season peaks in late March 2026, PM2.5 levels have climbed into unhealthy ranges in both Chiang Rai and Chiang Mai.

The post Air Quality Update for Chiang Rai and Chiang Mai, March 29, 2026 first appeared on Chiang Rai Times.

Chiang Mai is facing a serious haze problem as PM2.5 levels spike across the province. Officials also found 24 wildfire hotspots, so disaster teams sent a KA-32 helicopter to fly water-drop missions throughout the day.

The post Chiang Mai PM2.5 Air Quality Elevated into Critical Category first appeared on Chiang Rai Times.