A Public Health Crisis Spreading Across the Archipelago
Indonesia's dry season has turned severe in 2026. Fires burning across Kalimantan, Sumatra and Papua have generated toxic haze that has now crossed national borders, affecting parts of Malaysia and Singapore as well. As of September 21, health authorities had recorded 174,694 cases of acute respiratory infections in seven haze-affected provinces, up sharply from roughly 113,000 cases just twelve days earlier and from fewer than 51,000 at the start of the month.
More than 40,000 of those cases involved toddlers, according to a health ministry official cited by The Jakarta Post, which first reported the figures. The ministry estimates that over 12.5 million people across the seven provinces have been exposed to haze.
What Is in the Smoke
The smog is not ordinary haze. It carries PM 2.5, fine particulate matter small enough to penetrate deep into the lungs and enter the bloodstream. Health ministry official Then Suyanti, speaking at a news conference, described PM 2.5 as a driver of respiratory infections and advised the public to limit outdoor activity when air quality deteriorates, wear masks, and stay well hydrated. The ministry has deployed oxygen concentrators, face masks and oxygen canisters to affected areas.
Why This Season Is Worse Than Usual
Indonesia experiences wildfire seasons every year between roughly July and October, driven by dry conditions and land-clearing practices. This year, however, the fires are burning with unusual intensity. Meteorologists expect the current El Niño event to be the strongest since comparable records began four decades ago, producing prolonged drought conditions that make vegetation far more combustible. Experts also point to decades of forest degradation and slash-and-burn agriculture as factors that have stripped the landscape of its natural resistance to fire.
Government data cited by The Jakarta Post indicates that more than 100,000 hectares burned in the first half of 2026 alone.
What Travelers Should Know Before Visiting Affected Regions
Anyone planning to visit Central Kalimantan, including the provincial capital Palangkaraya, or haze-affected parts of Sumatra and Papua should monitor real-time air quality indices before and during travel. On days when the Air Quality Index reaches unhealthy levels, outdoor activities including trekking, river tours and open-air markets carry genuine health risks. Travelers with asthma, cardiovascular conditions, or young children are particularly vulnerable. Carrying N95 or KN95 masks is advisable; standard surgical masks offer limited protection against PM 2.5. Accommodation with functioning air filtration or air conditioning provides meaningful relief.
Visibility on roads can drop sharply during peak haze, as seen in Palangkaraya in late August, so ground transport schedules may be disrupted.
Why It Matters for Hosts
Independent operators in Kalimantan, Sumatra and Papua should treat air quality as a live variable in their guest communications right now. Proactively sharing daily AQI readings with arriving guests, stocking masks at check-in, and having a clear policy for rescheduling outdoor activities on high-haze days will reduce complaints and build trust. Hosts running jungle lodges, river homestays or eco-camps should also review their cancellation terms: guests facing a genuine health advisory may request flexibility, and a transparent policy stated upfront is easier to manage than a dispute after arrival. Operators who demonstrate that they take air quality seriously are likely to earn stronger reviews during a period when many travelers are uncertain about conditions on the ground.
Details in this post were first reported by The Jakarta Post on September 24, 2026.
First reported by thejakartapost.com.