Wildfire in Thailand — Green alert

Summary

Wildfires in northern Thailand, particularly around Chiang Rai province, have generated severe air pollution with PM2.5 levels reaching 193.2 micrograms per cubic meter as of April 22, 2026. The fires, which began on April 14, have prompted red alert conditions due to toxic air quality that significantly exceeds safe breathing standards.

Supply chain impact

• Palm oil production in northern Thailand could face disruptions from poor air quality affecting agricultural workers and field operations, though the extent of impact on plantation areas requires further assessment.
• Transportation and logistics operations in the affected region may experience delays or suspended activities due to hazardous visibility conditions and health safety protocols for workers.
• Manufacturing facilities in northern Thailand may implement production slowdowns or temporary shutdowns to protect worker health from extreme air pollution levels.

Watch points

• Monitor expansion of the fire perimeter and whether it threatens major agricultural areas beyond the current affected zones.
• Track government response measures including potential evacuation orders or industrial activity restrictions that could broaden economic disruptions.