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ID · Indonesia · –

Barito Selatan fire, 26 August 2026 Barito Selatan, Kapuas

Out · last detection 18 Oct 2026, 17:43 UTC

The fire started on 26 August 2026 in Barito Selatan, Indonesia, and satellites saw it burning for 54 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,497 hectares from heat detections, spread across 2 municipalities.

This page is probably a fire complex, not a single fire. GWIS merges into one perimeter the fires that touch over weeks, which in large burning seasons can join dozens of separate fires. The total area is reliable; the origin and dates refer to the whole complex.

Other fire pages in the same area and on the same dates:

Number 200 in Indonesia in 2026, of 981.

GWIS near-real-time perimeter, from the layer that changed in October 2025: this fire is not compared with fires from earlier years, because since then the GWIS layer gives more and larger perimeters.

Burnt area
4,497ha
GWIS perimeter (Copernicus)
Duration
54days
26 Aug 2026 – 18 Oct 2026
Municipalities hit
2
regencies
Started on
26 Aug
2026
Heat detections
392
in a single hotspot: 89 MW
Danger at start
27
High · FWI index
Average daily power
86MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 26 Aug18 Oct
18 Oct 2026

How it evolved, day by day

26 Aug 2026 · 4 MW · 1 27 Aug 2026 · 1 MW · 1 28 Aug 2026 · 37 MW · 5 29 Aug 2026 · 6 MW · 4 31 Aug 2026 · 7 MW · 1 1 Sept 2026 · 2 MW · 2 3 Sept 2026 · 1 MW · 1 8 Sept 2026 · 5 MW · 4 11 Sept 2026 · 384 MW · 10 12 Sept 2026 · 176 MW · 13 13 Sept 2026 · 88 MW · 9 14 Sept 2026 · 58 MW · 14 15 Sept 2026 · 28 MW · 13 18 Sept 2026 · 26 MW · 7 19 Sept 2026 · 55 MW · 12 20 Sept 2026 · 26 MW · 8 21 Sept 2026 · 35 MW · 9 22 Sept 2026 · 20 MW · 4 24 Sept 2026 · 368 MW · 29 25 Sept 2026 · 245 MW · 56 26 Sept 2026 · 1 MW · 1 27 Sept 2026 · 118 MW · 10 28 Sept 2026 · 47 MW · 15 29 Sept 2026 · 12 MW · 5 1 Oct 2026 · 4 MW · 2 2 Oct 2026 · 42 MW · 11 3 Oct 2026 · 2 MW · 1 4 Oct 2026 · 10 MW · 5 5 Oct 2026 · 24 MW · 9 6 Oct 2026 · 7 MW · 5 7 Oct 2026 · 15 MW · 6 8 Oct 2026 · 17 MW · 9 11 Oct 2026 · 65 MW · 28 12 Oct 2026 · 358 MW · 11 13 Oct 2026 · 59 MW · 15 14 Oct 2026 · 904 MW · 53 15 Oct 2026 · 0 MW · 0 16 Oct 2026 · 0 MW · 0 17 Oct 2026 · 3 MW · 2 18 Oct 2026 · 1 MW · 1
26 Aug 11 Sept 21 Sept 1 Oct 14 Oct

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

38°high
30km/h · peak gust
28%lowest humidity

It had gone 27 days without rain (1 mm or more) when it started. Rain came after the fire: 3.4 mm on 19 Oct.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

How big is it?

10 km
It burned the equivalent of 2.8% of the area of London (45 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Barito Selatan where it started
    2,880 ha reached on 26 Aug
    0.4 %
  2. 1,807 ha reached on 21 Sept
    0.1 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.

People and buildings inside the perimeter

GHSL 2025
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

The weather day by day

ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.

Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

Day High Min. humidity Peak gust Rain Danger (FWI)
26 Aug 35.1 °C 36 % 20 km/h 0.0 mm High 27
27 Aug 35.1 °C 37 % 24 km/h 0.0 mm High 27
28 Aug 35.5 °C 28 % 24 km/h 0.0 mm High 36
29 Aug 35.5 °C 34 % 22 km/h 0.0 mm High 31
30 Aug 34.6 °C 40 % 19 km/h 0.0 mm High 28
31 Aug 35.2 °C 43 % 29 km/h 0.0 mm High 29
1 Sept 35.7 °C 37 % 26 km/h 0.0 mm High 28
2 Sept 35.2 °C 38 % 22 km/h 0.0 mm High 27
3 Sept 34.7 °C 42 % 23 km/h 0.0 mm High 26
4 Sept 34.4 °C 45 % 24 km/h 0.2 mm High 27
5 Sept 34.4 °C 46 % 25 km/h 0.1 mm High 28
6 Sept 35.1 °C 41 % 21 km/h 0.0 mm High 27
7 Sept 32.8 °C 56 % 24 km/h 0.7 mm Moderate 21
8 Sept 33.3 °C 56 % 17 km/h 0.9 mm Moderate 20
9 Sept 34.6 °C 48 % 26 km/h 1.6 mm Moderate 16
10 Sept 35.5 °C 41 % 23 km/h 0.0 mm High 25
11 Sept 36.2 °C 33 % 21 km/h 0.0 mm High 36
12 Sept 35.5 °C 40 % 19 km/h 0.0 mm High 33
13 Sept 35.7 °C 40 % 27 km/h 0.0 mm High 35
14 Sept 35.7 °C 35 % 26 km/h 0.0 mm High 33
15 Sept 35.8 °C 35 % 21 km/h 0.0 mm High 30
16 Sept 31.6 °C 49 % 22 km/h 0.7 mm High 27
17 Sept 31.2 °C 51 % 30 km/h 1.9 mm Low 7
18 Sept 35.6 °C 36 % 17 km/h 0.0 mm High 24
19 Sept 37.3 °C 34 % 19 km/h 0.0 mm High 31
20 Sept 36.1 °C 40 % 19 km/h 0.0 mm High 29
21 Sept 36.4 °C 38 % 19 km/h 0.0 mm High 28
22 Sept 36.6 °C 39 % 19 km/h 0.0 mm High 29
23 Sept 36.6 °C 37 % 17 km/h 0.0 mm High 28
24 Sept 36.2 °C 40 % 22 km/h 0.4 mm High 31
25 Sept 34.8 °C 50 % 20 km/h 2.1 mm Low 10
26 Sept 35.5 °C 48 % 15 km/h 0.2 mm Moderate 18
27 Sept 34.4 °C 49 % 21 km/h 5.9 mm High 21
28 Sept 34.4 °C 51 % 23 km/h 4.3 mm Very low 4
29 Sept 35.0 °C 48 % 19 km/h 0.6 mm Low 6
30 Sept 35.6 °C 47 % 22 km/h 0.9 mm Moderate 15
1 Oct 34.8 °C 44 % 23 km/h 3.2 mm Very low 3
2 Oct 36.0 °C 40 % 16 km/h 0.1 mm Low 11
3 Oct 34.9 °C 42 % 22 km/h 0.0 mm Moderate 18
4 Oct 36.7 °C 33 % 19 km/h 0.1 mm Moderate 20
5 Oct 36.4 °C 33 % 20 km/h 0.0 mm High 23
6 Oct 35.8 °C 40 % 20 km/h 0.0 mm High 23
7 Oct 36.2 °C 34 % 20 km/h 0.0 mm High 26
8 Oct 35.5 °C 39 % 18 km/h 0.0 mm High 29
9 Oct 35.2 °C 42 % 21 km/h 0.6 mm High 27
10 Oct 33.5 °C 52 % 16 km/h 1.4 mm Moderate 19
11 Oct 34.6 °C 46 % 25 km/h 0.3 mm Moderate 11
12 Oct 37.9 °C 31 % 23 km/h 0.0 mm High 30
13 Oct 35.6 °C 42 % 19 km/h 0.1 mm High 28
14 Oct 38.3 °C 29 % 22 km/h 0.0 mm High 32
15 Oct 35.8 °C 45 % 18 km/h 0.3 mm High 27
16 Oct 35.7 °C 43 % 22 km/h 0.8 mm High 28
17 Oct 36.3 °C 39 % 19 km/h 0.8 mm Moderate 21
18 Oct 34.6 °C 47 % 19 km/h 3.3 mm Moderate 21
19 Oct after 35.2 °C 47 % 20 km/h 3.4 mm Low 6

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 19 Aug 2026
After · 25 Oct 2026

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 17 September 2026 the air beside the fire reached 2,436 µg/m³ of PM2.5. That day averaged 1,117: 74 times the WHO daily guideline (15).

PM2.5 peak2,436 µg/m³
Days over the guideline40 days
PM102,474 µg/m³
Optical depth10.56
24 Aug1 Sept9 Sept17 Sept25 Sept
Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 392Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Indonesia

Frequently asked questions

How long did the Barito Selatan fire last?
GWIS (Copernicus) dates it between 26 August 2026 and 18 October 2026: 54 days between the first and last heat detection of the perimeter.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,497 hectares (45.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Barito Selatan (2,880 ha, 0.4 %); Kapuas (1,807 ha, 0.1 %).
Is the Barito Selatan fire still active?
No fire detections since 18 Oct 2026, 17:43 UTC. A lack of detections is not an official extinction.
What was the weather like?
During the fire the temperature reached 38.3 °C, humidity dropped to 28 % and gusts hit 30 km/h. The fire danger index (FWI) reached 36, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Indonesia (geoBoundaries). It is not an official report.

Where to verify it

A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.

Emergency number: 112 · Emergency number and official warnings

Satellite cross-check

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Area: 4,657 → 4,497 ha.

RSS Changes to this page With cross-checks and a citable version

Does something look wrong on this page?

This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.

Report an error
What do you think is wrong?

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 112.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 392 Suomi-NPP VIIRS detections on those dates.
  • We have not matched this page with any official record.
  • Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
  • Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

How we build fire pages: methodology

Where this data comes from

The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.