Skip to content
worldfires
en
ID · Indonesia · →

Mappi fire, 22 September 2026 Mappi

Out · last detection 8 Oct 2026, 04:27 UTC

The fire started on 22 September 2026 in Mappi, Indonesia, and satellites saw it burning for 16 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,330 hectares from heat detections, spread across a single municipality.

It is the 174th largest in Papua since 2016 (of 350 with a page). Number 552 in Indonesia in 2026, of 1004.

Compare with…

Suggestions: Mappi · 2026Mappi · 2026Mappi · 2026Mappi · 2026

Burnt area
2,330ha
GWIS perimeter (Copernicus)
Duration
16days
22 Sept 2026 – 7 Oct 2026
Municipalities hit
1
regencies
Started on
22 Sept
2026
Heat detections
52
in a single hotspot: 48 MW
Danger at start
26
High · FWI index
Average daily power
54MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 22 Sept7 Oct
8 Oct 2026

How it evolved, day by day

22 Sept 2026 · 19 MW · 2 23 Sept 2026 · 6 MW · 1 26 Sept 2026 · 97 MW · 8 27 Sept 2026 · 150 MW · 15 28 Sept 2026 · 114 MW · 4 29 Sept 2026 · 99 MW · 8 30 Sept 2026 · 4 MW · 1 2 Oct 2026 · 0 MW · 0 3 Oct 2026 · 0 MW · 0 6 Oct 2026 · 48 MW · 11 7 Oct 2026 · 5 MW · 1 8 Oct 2026 · 3 MW · 1
22 Sept 26 Sept 27 Sept 28 Sept 30 Sept 3 Oct 7 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

34°high
40km/h · peak gust
37%lowest humidity

It had gone 18 days without rain (1 mm or more) when it started.

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 1.5% of the area of London (23 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. Mappi where it started
    2,347 ha reached on 22 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.

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)
18 Sept 33.2 °C 40 % 37 km/h 0.0 mm High 26
19 Sept 30.8 °C 49 % 40 km/h 0.0 mm High 27
20 Sept 31.6 °C 48 % 34 km/h 0.0 mm High 26
21 Sept 32.8 °C 46 % 27 km/h 0.0 mm High 24
22 Sept 32.8 °C 46 % 30 km/h 0.0 mm High 26
23 Sept 31.0 °C 53 % 30 km/h 0.0 mm High 24
24 Sept 32.3 °C 50 % 25 km/h 0.1 mm High 23
25 Sept 33.3 °C 45 % 28 km/h 0.0 mm High 24
26 Sept 33.7 °C 43 % 33 km/h 0.1 mm High 26
27 Sept 34.0 °C 40 % 32 km/h 0.0 mm High 28
28 Sept 34.5 °C 38 % 35 km/h 0.0 mm High 30
29 Sept 34.3 °C 37 % 30 km/h 0.0 mm High 29
30 Sept 33.0 °C 44 % 24 km/h 0.0 mm High 27
1 Oct 33.6 °C 42 % 37 km/h 0.0 mm High 32
2 Oct 34.3 °C 42 % 39 km/h 0.0 mm High 33
3 Oct 33.2 °C 45 % 30 km/h 0.0 mm High 29
4 Oct 33.5 °C 45 % 31 km/h 0.1 mm High 29
5 Oct 34.3 °C 42 % 28 km/h 0.0 mm High 28

Before and after, from space

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

Before · 15 Sept 2026
After · 14 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 30 September 2026 the air beside the fire reached 409 µg/m³ of PM2.5. That day averaged 170: 11 times the WHO daily guideline (15).

PM2.5 peak409 µg/m³
Days over the guideline12 days
PM10414 µg/m³
Optical depth3.23
2122232425262728293012
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 · 52Every 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 Mappi fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 22 September 2026 to 7 October 2026 (16 days). The perimeter dates it from 23 September 2026 to 1 October 2026.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,330 hectares (23.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Mappi (2,347 ha, 0.1 %).
Is the Mappi fire still active?
No fire detections since 8 Oct 2026, 04:27 UTC. A lack of detections is not an official extinction.
What was the weather like?
During the fire the temperature reached 34.5 °C, humidity dropped to 37 % and gusts hit 40 km/h. The fire danger index (FWI) reached 33, 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 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

No changes since 24 October 2026.

RSS Changes to this page

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.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 23 September 2026 to 1 October 2026. 52 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.

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.