How long did the Ketapang fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 25 July 2026 to 4 October 2026 (72 days). The perimeter dates it from 1 August 2026 to 27 September 2026.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 144,669 hectares (1,446.7 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Ketapang (145,422 ha, 4.9 %).

Is the Ketapang fire still active?

No fire detections since 5 Oct 2026, 18:28 UTC. A lack of detections is not an official extinction.

What was the weather like?

During the fire the temperature reached 37.3 °C, humidity dropped to 30 % and gusts hit 41 km/h. The fire danger index (FWI) reached 40, class Very 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.

ID · Indonesia · 2026-07-25 → 2026-10-04

Ketapang fire, 25 July 2026 Ketapang

Out · last detection 5 Oct 2026, 18:28 UTC

The fire started on 25 July 2026 in Ketapang, Indonesia, and satellites saw it burning for 72 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 144,669 hectares from heat detections, spread across a single municipality.

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.

It is the largest fire in West Kalimantan since 2016 (of 264 with a page). Number 2 in Indonesia in 2026, of 988.

Burnt area: 144,669ha; GWIS perimeter (Copernicus)
Duration: 72days; 25 Jul 2026 – 4 Oct 2026
Municipalities hit: 1; regencies
Started on: 25 Jul; 2026
Heat detections: 10,603; in a single hotspot: 569 MW
Danger at start: 21; High · FWI index
Energy released: 90.5GW; sum of detected power

Play back 5 Oct 2026

HOTSPOTS BY DAY 25 Jul4 Oct

How it evolved, day by day

25262728293031124567891011121314151617181920212223242526272829303112345678910111213141517181920212223242526272912345

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

The weather it burned in

37°high

41km/h · peak gust

30%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 3.7 mm on 30 Sept.

This area had burned before

40% of the perimeter overlaps earlier fires recorded since 2016: 700 ha in 2016, 6 ha in 2017, 13,365 ha in 2018, 60,699 ha in 2019, 261 ha in 2021, 24,551 ha in 2023, 1,998 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 57,836 ha that had burned before.

What happened to each town

Ketapang where it started

145,422 ha reached on 25 Jul

4.9 %

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

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)
1 Aug	33.7 °C	50 %	34 km/h	0.3 mm	High 21
2 Aug	35.3 °C	41 %	33 km/h	0.0 mm	High 23
3 Aug	35.3 °C	41 %	34 km/h	0.0 mm	High 24
4 Aug	35.3 °C	40 %	31 km/h	0.0 mm	High 24
5 Aug	34.5 °C	43 %	35 km/h	0.0 mm	High 25
6 Aug	34.8 °C	41 %	32 km/h	0.0 mm	High 25
7 Aug	34.6 °C	41 %	32 km/h	0.0 mm	High 25
8 Aug	34.2 °C	40 %	32 km/h	0.0 mm	High 26
9 Aug	34.2 °C	38 %	32 km/h	0.0 mm	High 26
10 Aug	34.7 °C	38 %	31 km/h	0.0 mm	High 27
11 Aug	34.1 °C	39 %	32 km/h	0.0 mm	High 27
12 Aug	33.9 °C	46 %	31 km/h	0.0 mm	High 27
13 Aug	33.8 °C	47 %	32 km/h	0.1 mm	High 27
14 Aug	34.8 °C	44 %	31 km/h	0.0 mm	High 27
15 Aug	33.9 °C	47 %	30 km/h	0.0 mm	High 27
16 Aug	35.6 °C	40 %	34 km/h	0.0 mm	High 28
17 Aug	35.5 °C	39 %	26 km/h	0.0 mm	High 26
18 Aug	36.0 °C	34 %	35 km/h	0.0 mm	High 32
19 Aug	35.5 °C	38 %	35 km/h	0.0 mm	High 32
20 Aug	34.8 °C	40 %	33 km/h	0.0 mm	High 32
21 Aug	35.0 °C	43 %	36 km/h	0.0 mm	High 32
22 Aug	35.0 °C	44 %	35 km/h	0.0 mm	High 32
23 Aug	33.8 °C	48 %	36 km/h	0.0 mm	High 30
24 Aug	33.9 °C	48 %	36 km/h	0.0 mm	High 30
25 Aug	34.5 °C	45 %	41 km/h	0.0 mm	High 32
26 Aug	35.2 °C	40 %	33 km/h	0.0 mm	High 29
27 Aug	35.0 °C	42 %	33 km/h	0.0 mm	High 29
28 Aug	34.0 °C	40 %	36 km/h	0.0 mm	High 31
29 Aug	34.8 °C	39 %	35 km/h	0.0 mm	High 30
30 Aug	35.7 °C	35 %	28 km/h	0.0 mm	High 30
31 Aug	35.5 °C	40 %	30 km/h	0.0 mm	High 31
1 Sept	35.4 °C	36 %	40 km/h	0.0 mm	High 35
2 Sept	34.8 °C	36 %	37 km/h	0.0 mm	High 34
3 Sept	34.2 °C	43 %	35 km/h	0.0 mm	High 33
4 Sept	34.2 °C	44 %	31 km/h	0.0 mm	High 31
5 Sept	34.3 °C	39 %	37 km/h	0.0 mm	High 33
6 Sept	34.5 °C	40 %	33 km/h	0.0 mm	High 32
7 Sept	33.7 °C	48 %	33 km/h	0.0 mm	High 30
8 Sept	33.8 °C	49 %	30 km/h	0.5 mm	High 28
9 Sept	34.5 °C	42 %	37 km/h	0.0 mm	High 31
10 Sept	35.2 °C	38 %	35 km/h	0.0 mm	High 31
11 Sept	35.5 °C	41 %	36 km/h	0.0 mm	High 32
12 Sept	35.0 °C	40 %	32 km/h	0.0 mm	High 30
13 Sept	34.0 °C	52 %	35 km/h	0.0 mm	High 29
14 Sept	35.3 °C	39 %	37 km/h	0.0 mm	High 32
15 Sept	31.1 °C	57 %	31 km/h	0.0 mm	High 24
16 Sept	32.5 °C	49 %	31 km/h	0.0 mm	High 25
17 Sept	31.8 °C	52 %	28 km/h	0.0 mm	High 24
18 Sept	35.5 °C	37 %	31 km/h	0.0 mm	High 30
19 Sept	35.8 °C	38 %	30 km/h	0.0 mm	High 30
20 Sept	37.3 °C	30 %	34 km/h	0.0 mm	High 36
21 Sept	36.6 °C	32 %	30 km/h	0.0 mm	High 36
22 Sept	36.2 °C	35 %	29 km/h	0.0 mm	High 35
23 Sept	36.1 °C	37 %	31 km/h	0.0 mm	High 36
24 Sept	36.3 °C	37 %	40 km/h	0.2 mm	Very high 40
25 Sept	35.9 °C	45 %	34 km/h	6.6 mm	Low 8
26 Sept	35.2 °C	46 %	35 km/h	1.9 mm	Moderate 14
27 Sept	32.7 °C	61 %	28 km/h	8.6 mm	Very low 3
28 Sept	33.7 °C	47 %	29 km/h	0.0 mm	Low 11
29 Sept	34.2 °C	48 %	20 km/h	0.3 mm	Moderate 15
30 Sept	33.5 °C	56 %	31 km/h	3.7 mm	Very low 5

Before and after, from space

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

↔

Before · 18 Jul 2026

After · 11 Oct 2026

Before After

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 21 September 2026 the air beside the fire reached 721 µg/m³ of PM2.5. That day averaged 372: 25 times the WHO daily guideline (15).

PM2.5 peak721 µg/m³

Days over the guideline68 days

PM10732 µg/m³

Optical depth7.72

WHO 15

2324252627282930311234567891011121314151617181920212223242526272829303112345678910111213141516171819202122232425262728293012

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 · 10,603Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Indonesia ›

Frequently asked questions

How long did the Ketapang fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 25 July 2026 to 4 October 2026 (72 days). The perimeter dates it from 1 August 2026 to 27 September 2026.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 144,669 hectares (1,446.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Ketapang (145,422 ha, 4.9 %).
Is the Ketapang fire still active?: No fire detections since 5 Oct 2026, 18:28 UTC. A lack of detections is not an official extinction.
What was the weather like?: During the fire the temperature reached 37.3 °C, humidity dropped to 30 % and gusts hit 41 km/h. The fire danger index (FWI) reached 40, class Very 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

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

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.

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What really happened?

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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.

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.

Where it burned