Fires of Unprecedented Scale Grip Kalimantan and Sumatra
Indonesia's annual dry-season wildfires have reached a severity in 2026 that is straining the country's emergency response capacity. The government has deployed 64 aircraft and 54,000 personnel across Kalimantan and Sumatra since August, yet Cabinet Secretary Teddy Indra Wijaya acknowledged that containment remains elusive. The sheer size of the affected territory, combined with the peculiar behavior of peat fires, is defeating conventional firefighting methods.
Peat is the core problem. Unlike surface fires, peat blazes burn deep underground, making water bombing from aircraft only partially effective. In West Kalimantan, one of the hardest-hit provinces, disaster mitigation agency spokesman Daniel Sinyor noted that water sources on the ground are drying up in fire-affected zones, leaving ground crews with diminishing options.
How Big Is the Damage?
The numbers tell a stark story. Indonesia's own government counted more than 202,000 hectares burned between January and July alone. The independent Nusantara Atlas project put that figure closer to 300,000 hectares over the same period, and when August is included, the total area affected rises to an estimated 896,000 hectares. Forestry Minister Raja Juli Antoni has warned that the fires could persist through November.
The smoke has not stayed within Indonesian borders. Toxic haze has blanketed parts of Malaysia and Singapore for weeks. Kuala Lumpur recorded an Air Pollutant Index reading of 156, and Kuching in Sarawak, which shares a border with three Kalimantan provinces, logged 157. Malaysia's national guidelines classify anything above 100 as unhealthy. Malaysian authorities launched cloud seeding operations in three southern states on Monday in an effort to replenish water supplies and reduce haze concentration.
International assistance is also arriving. Around 350 members of Japan's Self-Defense Forces reached West Kalimantan this month to support firefighting operations, and President Prabowo Subianto has indicated openness to further help from Malaysia.
Why Fires Are Worse This Year
Indonesia battles wildfires every dry season, which typically runs from July to October. But 2026 is different. Scientists and officials point to a convergence of factors: what is expected to be the strongest El Niño event in four decades, long-term climate change, decades of forest degradation, and slash-and-burn land-clearing practices that have altered the naturally fire-resistant landscape. A class action lawsuit filed last week by Indigenous and civil society groups in West Kalimantan against the president and the provincial governor argues that this recurring pattern reflects a foreseeable, preventable failure rather than a natural disaster.
Why It Matters for Hosts
Independent operators running guesthouses, homestays, or tour services in Kalimantan, Sumatra, or any destination downwind of the fire zones should act now on guest communication. Air quality in affected areas can shift rapidly, and travelers arriving without current information may be unprepared for restricted outdoor activities, flight disruptions, or health precautions. Proactively sharing real-time Air Quality Index data with incoming guests, stocking N95 masks as a complimentary amenity, and having a clear cancellation or rescheduling policy tied to air quality thresholds will build trust and reduce disputes. Hosts in unaffected parts of Indonesia can also position their destinations as alternatives for travelers reconsidering Borneo or Sumatra itineraries this season.
The details in this post were first reported by The Jakarta Post on September 21, 2026, drawing on reporting from AFP and Reuters.
First reported by thejakartapost.com.