Fires in Indonesia that have sent toxic smoke sweeping across Southeast Asia have triggered the highest-level alert by the regional bloc's meteorological monitor. The months-long pollution spell has closed schools, fuelled a surge in respiratory conditions and restricted outdoor activities in Indonesia, Malaysia, Singapore and East Timor. The haze is made up of fumes the forest and peatland fires that have ravaged parts of Indonesia, most notably on the islands of Borneo and Sumatra.
These areas are covered in dense forests and vast stretches of peatland that are especially prone to fire during the dry season, which usually runs from April to October. The region is also currently under the influence of severe "super-El Nino" weather conditions, which brought additional heat and dryness and caused wildfires to spread more quickly. While the extent of the damage remains unknown, environmental group Auriga reported that more than 637,000 hectares were burned from January to August this year, nine times the area of Singapore.
Deforestation monitor Nusantara Atlas put the figure even higher at nearly 900,000 hectares. "This thing needs to stop," Zul Hafiz, a 39-year-old teacher cycling from the Malaysian city of Shah Alam to the capital, told on Saturday, calling on the Association of Southeast Asian Nations (ASEAN) to take action. The 11-country organisation's ASEAN Specialised Meteorological Centre (ASMC) said in a notice on its website on Friday that it had activated "Alert Level 3 for the Southern ASEAN region"– the highest rung of a four-tiered alert system.
The alert level is triggered when there is a "high risk of severe transboundary haze in the region" and is reserved for widespread moderate to dense smoke haze, observed over two or more consecutive days. People stand on a promenade as haze from wildfires shrouds the area, on the bank of the Kahayan River in Palangka Raya, Central Kalimantan province, Indonesia, October 15, 2026. © Usep Hariadi, The ASMC has already issued two Level 3 alerts this year, according to its website. Singapore ranked second on IQAir's live ranking of the world's most polluted major cities behind Baghdad on Saturday, with Kuala Lumpur third.
All readings showed "very hazardous" levels." Indonesia said Saturday it had been using dry ice at one of South Sumatra province's main airports in an attempt to disperse the haze. The country's national disaster mitigation agency said that 2.4 tonnes of dry ice were dispersed by plane. "The smoke not only reduces visibility and disrupts aircraft operations, but also affects residents' health," the agency warned.
The haze has disrupted life across Southeast Asia, sparking fresh calls for action from those affected. "It's a bit unfair on Malaysia because of the irresponsible behaviour of our neighbouring country," Khairul Azhar, a 33-year-old bank officer told in Kuala Lumpur. "This is affecting our weekend routine– not just for us but many Malaysians," he said.
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