Mouyondzi fire, 1 September 2026 Mouyondzi, Madingou
The fire started on 1 September 2026 in Mouyondzi, Republic of the Congo, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,701 hectares from heat detections, spread across 2 municipalities.
It is the 6th largest in Bouenza since 2016 (of 181 with a page). Number 16 in Republic of the Congo in 2026, of 360.
Compare with…
- Burnt area
- 4,701ha
- GWIS perimeter (Copernicus)
- Duration
- 10days
- 1 Sept 2026 – 10 Sept 2026
- Municipalities hit
- 2
- districts
- Started on
- 1 Sept
- 2026
- Heat detections
- 49
- in a single hotspot: 36 MW
- Danger at start
- 22
- High · FWI index
- Average daily power
- 86MW
- detected power per day, on average
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 3 days without rain (1 mm or more) when it started.
This area had burned before
24% of the perimeter overlaps earlier fires recorded since 2016: 294 ha in 2017, 181 ha in 2023, 666 ha in 2025.
- 575 ha Mouyondzi fire, September 2025 1,605 ha in total; the hectares shown are those it shares with this fire
- 294 ha Mouyondzi fire, October 2017 1,378 ha in total; the hectares shown are those it shares with this fire
- 181 ha Mouyondzi fire, August 2023 1,185 ha in total; the hectares shown are those it shares with this fire
- 56 ha Mouyondzi fire, September 2025 1,659 ha in total; the hectares shown are those it shares with this fire
- 35 ha Mouyondzi fire, September 2025 1,125 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Mouyondzi where it started4,636 ha reached on 1 Sept0.9 %
-
97 ha reached on 4 Sept0.1 %
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) |
|---|---|---|---|---|---|
| 1 Sept | 35.2 °C | 45 % | 23 km/h | 0.0 mm | High 22 |
| 2 Sept | 30.1 °C | 60 % | 28 km/h | 0.0 mm | Moderate 19 |
| 3 Sept | 29.2 °C | 65 % | 27 km/h | 0.2 mm | Moderate 17 |
| 4 Sept | 33.8 °C | 50 % | 27 km/h | 0.0 mm | Moderate 21 |
| 5 Sept | 30.0 °C | 62 % | 24 km/h | 0.0 mm | Moderate 19 |
| 6 Sept | 31.0 °C | 57 % | 23 km/h | 0.1 mm | Moderate 18 |
| 7 Sept | 34.9 °C | 48 % | 25 km/h | 0.2 mm | High 23 |
| 8 Sept | 31.5 °C | 56 % | 27 km/h | 0.0 mm | High 22 |
| 9 Sept | 28.9 °C | 60 % | 28 km/h | 0.0 mm | Moderate 19 |
| 10 Sept | 33.2 °C | 47 % | 29 km/h | 0.0 mm | High 23 |
| 11 Sept after | 30.8 °C | 57 % | 30 km/h | 0.0 mm | Moderate 21 |
| 12 Sept after | 32.7 °C | 52 % | 26 km/h | 0.0 mm | High 22 |
| 13 Sept after | 28.6 °C | 65 % | 23 km/h | 0.1 mm | Moderate 17 |
| 14 Sept after | 34.4 °C | 46 % | 30 km/h | 0.0 mm | High 24 |
| 15 Sept after | 30.3 °C | 56 % | 27 km/h | 0.0 mm | High 23 |
| 16 Sept after | 27.7 °C | 64 % | 28 km/h | 0.8 mm | Moderate 13 |
| 17 Sept after | 30.0 °C | 57 % | 24 km/h | 0.6 mm | Moderate 15 |
| 18 Sept after | 30.3 °C | 61 % | 29 km/h | 0.1 mm | Moderate 17 |
| 19 Sept after | 30.6 °C | 60 % | 24 km/h | 0.1 mm | Moderate 16 |
| 20 Sept after | 33.2 °C | 50 % | 30 km/h | 0.1 mm | High 23 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · CopernicusOn 9 September 2026 the air beside the fire reached 134 µg/m³ of PM2.5. That day averaged 77: 5.1 times the WHO daily guideline (15).
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 · 49Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 6,651 haMouyondzi2 September 2026 · 14 days · 9 km away
- 4,055 haMouyondzi14 September 2026 · 15 days · 15 km away
- 4,434 haMouyondzi14 September 2025 · 7 days · 21 km away
- 3,503 haMouyondzi1 September 2026 · 12 days · 21 km away
- 4,188 haMouyondzi17 August 2026 · 11 days · 22 km away
- 7,494 haMouyondzi1 September 2026 · 15 days · 24 km away
Frequently asked questions
- How long did the Mouyondzi fire last?
- GWIS (Copernicus) dates it between 1 September 2026 and 10 September 2026: 10 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 4,701 hectares (47.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Mouyondzi (4,636 ha, 0.9 %); Madingou (97 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 35.2 °C, humidity dropped to 45 % and gusts hit 29 km/h. The fire danger index (FWI) reached 23, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Republic of the Congo (geoBoundaries ADM2). 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.
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.
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
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. 49 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.
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 (Map Library 2007, nombres de Wikidata) (Public Domain). 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.