When Tirayut Wongsantisuk relocated his family to Chiang Mai a decade ago, they were seeking crisp mountain air and vibrant landscapes. Today, that idyllic vision has vanished behind a thick, hazardous wall of smoke that is driving residents to consider packing up for good.
The severe air pollution plaguing northern Thailand has taken a steep physical toll. Tirayut reports that two of his young daughters are suffering from chronic nosebleeds. His eldest, just six years old, has endured severe allergic reactions, including a rash and painfully swollen eyelids.
"I've been thinking, maybe we really should move during this time... because if something bad happens to our child, we'll feel terrible forever," the 41-year-old father stated.
This week, a relentless blanket of toxic smog transformed Chiang Mai into one of the most polluted cities on the globe, according to air quality tracking firm IQAir. Satellite imagery recorded a staggering 4,750 fire hotspots across the country on Tuesday alone, primarily burning through forested regions. By Wednesday morning, levels of PM2.5—microscopic, hazardous airborne particles—soared into the "very unhealthy" category, replacing fresh mountain breezes with a pervasive scent of ash.
Northern Thailand’s peak fire season typically stretches from November to March. The blazes are a combination of naturally occurring forest fires brought on by dry conditions and agricultural burning, a common practice where farmers clear fields ahead of the planting season. The resulting infernos have been so intense that local media reports quote residents comparing the blazing mountainsides to erupting volcanoes.
The terrifying conditions are pushing parents like Benjamas Jaiparkan to take drastic measures. The 35-year-old public school teacher recently relocated her children to the nearby province of Phayao to escape the smog. Her primary concern is her four-year-old son, whose frequent nosebleeds began last year.
"I feel so sorry for him because I don't know how much more his lungs can take," she admitted, adding that she is weighing a permanent departure from the city.
In an attempt to curb the crisis, local authorities have shut down high-risk public parks and issued stark warnings. Anyone caught illegally starting fires in these zones faces immediate arrest, with harsh penalties carrying up to 20 years behind bars and fines reaching 2 million baht (approximately $61,100).
Prolonged exposure to the region's haze carries severe health risks, ranging from irritated eyes and respiratory issues to an increased threat of heart attacks.
The suffocating conditions have sparked more than just health fears; they have ignited widespread public outrage and legal action. In July 2023, nearly 1,700 Chiang Mai residents filed a lawsuit against former Prime Minister Prayut Chan-o-cha and state agencies. The suit accused the government of inaction, which locals claim is shaving approximately five years off their life expectancy. By January 2024, a local court mandated that the government deploy an emergency air quality action plan within 90 days.
Meanwhile, the environmental crisis extends well beyond Thailand's borders. Hazardous haze is currently sweeping across broader Southeast Asia, with Malaysia and Indonesia reporting their highest number of fire hotspots in seven years.