Aripuanã fire, 16 August 2026 Aripuanã
The fire started on 16 August 2026 in Aripuanã, Brazil, and satellites saw it burning for 25 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,631 hectares from heat detections, spread across a single municipality.
It is the 1602th largest in Mato Grosso since 2016 (of 1996 with a page). Number 572 in Brazil in 2026, of 747.
- Burnt area
- 3,631ha
- GWIS perimeter (Copernicus)
- Duration
- 25days
- 16 Aug 2026 – 9 Sept 2026
- Municipalities hit
- 1
- municipalities
- Started on
- 16 Aug
- 2026
- Heat detections
- 162
- in a single hotspot: 170 MW
- Danger at start
- 18
- Moderate · FWI index
- Energy released
- 2.2GW
- sum of detected power
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 0 days without rain (1 mm or more) when it started. Rain came after the fire: 4.1 mm on 10 Sept.
This area had burned before
96% of the perimeter overlaps earlier fires recorded since 2016: 30 ha in 2016, 688 ha in 2017, 355 ha in 2018, 974 ha in 2019, 1,563 ha in 2020, 1,718 ha in 2021, 3,020 ha in 2022, 1,531 ha in 2023, 3,124 ha in 2024, 1,079 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 3,484 ha that had burned before.
- 991 ha Aripuanã fire, August 2020 5,021 ha in total; the hectares shown are those it shares with this fire
- 930 ha Aripuanã fire, October 2024 3,852 ha in total; the hectares shown are those it shares with this fire
- 442 ha Aripuanã fire, July 2021 8,873 ha in total; the hectares shown are those it shares with this fire
- 398 ha Aripuanã fire, August 2020 7,334 ha in total; the hectares shown are those it shares with this fire
- 375 ha Aripuanã fire, August 2019 10,794 ha in total; the hectares shown are those it shares with this fire
- 3 ha Aripuanã fire, August 2022 7,364 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
3,652 ha reached on 16 Aug0.1 %
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) |
|---|---|---|---|---|---|
| 11 Aug | 33.3 °C | 54 % | 29 km/h | 0.0 mm | Moderate 18 |
| 12 Aug | 29.8 °C | 68 % | 20 km/h | 0.2 mm | Moderate 13 |
| 13 Aug | 34.2 °C | 45 % | 26 km/h | 0.0 mm | Moderate 20 |
| 14 Aug | 35.2 °C | 36 % | 22 km/h | 0.0 mm | High 23 |
| 15 Aug | 36.0 °C | 29 % | 27 km/h | 0.0 mm | High 29 |
| 16 Aug | 36.0 °C | 28 % | 26 km/h | 0.0 mm | High 30 |
| 17 Aug | 36.8 °C | 29 % | 28 km/h | 0.0 mm | High 32 |
| 18 Aug | 34.2 °C | 45 % | 21 km/h | 0.0 mm | High 25 |
| 19 Aug | 34.8 °C | 44 % | 12 km/h | 0.0 mm | High 23 |
| 20 Aug | 34.4 °C | 41 % | 28 km/h | 0.0 mm | High 28 |
| 21 Aug | 35.0 °C | 40 % | 28 km/h | 0.0 mm | High 28 |
| 22 Aug | 36.3 °C | 32 % | 28 km/h | 0.0 mm | High 30 |
| 23 Aug | 35.4 °C | 36 % | 17 km/h | 0.0 mm | High 27 |
| 24 Aug | 32.1 °C | 57 % | 23 km/h | 1.7 mm | Low 9 |
| 25 Aug | 35.8 °C | 39 % | 23 km/h | 0.0 mm | Moderate 21 |
| 26 Aug | 35.6 °C | 38 % | 18 km/h | 0.0 mm | High 24 |
| 27 Aug | 35.8 °C | 40 % | 37 km/h | 0.0 mm | High 30 |
| 28 Aug | 35.0 °C | 42 % | 33 km/h | 0.3 mm | High 28 |
| 29 Aug | 36.1 °C | 37 % | 24 km/h | 0.0 mm | High 27 |
| 30 Aug | 36.7 °C | 36 % | 20 km/h | 0.0 mm | High 27 |
| 31 Aug | 36.0 °C | 41 % | 26 km/h | 0.0 mm | High 28 |
| 1 Sept | 36.8 °C | 38 % | 19 km/h | 0.0 mm | High 26 |
| 2 Sept | 35.3 °C | 45 % | 22 km/h | 1.1 mm | Moderate 18 |
| 3 Sept | 35.5 °C | 42 % | 17 km/h | 0.0 mm | High 22 |
| 4 Sept | 33.8 °C | 52 % | 19 km/h | 0.8 mm | Moderate 17 |
| 5 Sept | 33.2 °C | 53 % | 19 km/h | 0.4 mm | Moderate 18 |
| 6 Sept | 33.0 °C | 53 % | 20 km/h | 6.9 mm | Very low 4 |
| 7 Sept | 30.9 °C | 61 % | 23 km/h | 7.3 mm | Very low 2 |
| 8 Sept | 32.8 °C | 57 % | 19 km/h | 2.6 mm | Very low 2 |
| 9 Sept | 34.2 °C | 49 % | 26 km/h | 0.0 mm | Low 9 |
| 10 Sept after | 33.2 °C | 58 % | 15 km/h | 4.1 mm | Very low 2 |
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 25 August 2026 the air beside the fire reached 171 µg/m³ of PM2.5. That day averaged 85: 5.7 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 · 162Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 8,873 haAripuanãJuly 2021 · 19 days · 4 km away
- 10,794 haAripuanã11 August 2019 · 8 days · 5 km away
- 7,364 haAripuanã27 August 2022 · 12 days · 10 km away
- 7,334 haAripuanã29 August 2020 · 21 days · 11 km away
- 9,391 haAripuanã27 August 2020 · 18 days · 13 km away
- 9,461 haAripuanã9 August 2019 · 10 days · 14 km away
Frequently asked questions
- How long did the Aripuanã fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 16 August 2026 to 9 September 2026 (25 days). The perimeter dates it from 16 August 2026 to 3 September 2026.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 3,631 hectares (36.3 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Aripuanã (3,652 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 36.8 °C, humidity dropped to 28 % and gusts hit 37 km/h. The fire danger index (FWI) reached 32, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193
Satellite cross-check
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
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.