Oriximiná fire, 19 September 2026 Oriximiná, Óbidos
The fire started on 19 September 2026 in Oriximiná, Brazil, and satellites saw it burning for 46 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 87,793 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:
- 39,056 haÓbidosSeptember 2026 · 20 days
- 35,806 haOriximiná October 2026 · 12 days
- 8,191 haÓbidos11 October 2026 · 18 days
- 4,600 haÓbidos 28 October 2026 · 7 days
- 4,297 haOriximiná24 September 2026 · 4 days
- 3,029 haCoeroeni20 September 2026 · 8 days
- 2,710 haCoeroeni26 September 2026 · 6 days
- 1,352 haCoeroeniOctober 2026 · 4 days
It is the 13th largest in Pará since 2016 (of 1114 with a page). Number 4 in Brazil in 2026, of 783.
Compare with…
Is it still active?
No detections since 3 Nov 2026, 05:54 UTC. That usually means no flame is visible from space any more, although hotspots may remain. Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
- Burnt area
- 87,793ha
- GWIS perimeter (Copernicus)
- Duration
- 46days
- 19 Sept 2026 – 3 Nov 2026
- Municipalities hit
- 2
- municipalities
- Started on
- 19 Sept
- 2026
- Heat detections
- 1,618
- in a single hotspot: 268 MW
- Danger at start
- 26
- High · FWI index
- Average daily power
- 376MW
- 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 5 days without rain (1 mm or more) when it started.
This area had burned before
73% of the perimeter overlaps earlier fires recorded since 2016: 7,710 ha in 2016, 17,376 ha in 2017, 11,286 ha in 2018, 16,981 ha in 2019, 7,129 ha in 2020, 3,224 ha in 2021, 7,061 ha in 2022, 21,146 ha in 2023, 913 ha in 2024, 18,751 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 64,110 ha that had burned before.
- 8,305 ha Oriximiná fire, October 2025 13,323 ha in total; the hectares shown are those it shares with this fire
- 6,892 ha Óbidos fire, September 2023 48,531 ha in total; the hectares shown are those it shares with this fire
- 6,307 ha Óbidos fire, October 2018 22,307 ha in total; the hectares shown are those it shares with this fire
- 5,705 ha Óbidos fire, August 2023 24,709 ha in total; the hectares shown are those it shares with this fire
- 5,457 ha Oriximiná fire, September 2019 9,440 ha in total; the hectares shown are those it shares with this fire
- 5,255 ha Oriximiná fire, September 2023 7,392 ha in total; the hectares shown are those it shares with this fire
- 4,707 ha Oriximiná fire, October 2020 14,153 ha in total; the hectares shown are those it shares with this fire
- 4,484 ha Oriximiná fire, September 2019 5,518 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
-
50,851 ha reached on 19 Sept0.5 %
-
Óbidos 52,229 inhabitants29,320 ha reached on 28 Sept1.0 %
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) · forecast models, provisional until the ERA5 reanalysis arrives
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 19 Sept | 35.2 °C | 34 % | 33 km/h | 0.1 mm | High 26 |
| 20 Sept | 34.8 °C | 37 % | 32 km/h | 0.1 mm | High 26 |
| 21 Sept | 35.8 °C | 33 % | 36 km/h | 0.0 mm | High 28 |
| 22 Sept | 36.4 °C | 35 % | 30 km/h | 3.2 mm | Moderate 13 |
| 23 Sept | 34.8 °C | 45 % | 31 km/h | 5.5 mm | Low 6 |
| 24 Sept | 35.2 °C | 40 % | 28 km/h | 0.2 mm | Moderate 16 |
| 25 Sept | 35.2 °C | 37 % | 36 km/h | 0.0 mm | High 22 |
| 26 Sept | 36.4 °C | 31 % | 32 km/h | 0.0 mm | High 25 |
| 27 Sept | 35.3 °C | 38 % | 30 km/h | 0.2 mm | High 26 |
| 28 Sept | 35.5 °C | 43 % | 30 km/h | 1.8 mm | Moderate 15 |
| 29 Sept | 34.4 °C | 42 % | 28 km/h | 2.1 mm | Low 10 |
| 30 Sept | 34.8 °C | 44 % | 29 km/h | 1.4 mm | Moderate 15 |
| 1 Oct | 33.7 °C | 44 % | 36 km/h | 0.4 mm | High 23 |
| 2 Oct | 35.3 °C | 31 % | 39 km/h | 0.0 mm | High 27 |
| 3 Oct | 36.0 °C | 29 % | 34 km/h | 0.0 mm | High 29 |
| 4 Oct | 35.9 °C | 40 % | 30 km/h | 0.8 mm | High 23 |
| 5 Oct | 35.4 °C | 37 % | 36 km/h | 0.1 mm | High 27 |
| 6 Oct | 35.8 °C | 38 % | 37 km/h | 0.6 mm | High 28 |
| 7 Oct | 36.5 °C | 25 % | 35 km/h | 0.0 mm | High 35 |
| 8 Oct | 36.4 °C | 31 % | 35 km/h | 0.0 mm | High 35 |
| 9 Oct | 35.5 °C | 35 % | 38 km/h | 0.0 mm | High 35 |
| 10 Oct | 36.5 °C | 36 % | 35 km/h | 0.0 mm | High 33 |
| 11 Oct | 36.1 °C | 33 % | 32 km/h | 0.0 mm | High 35 |
| 12 Oct | 35.8 °C | 33 % | 35 km/h | 0.0 mm | High 38 |
| 13 Oct | 35.8 °C | 38 % | 32 km/h | 3.1 mm | Moderate 16 |
| 14 Oct | 35.9 °C | 33 % | 32 km/h | 0.1 mm | High 29 |
| 15 Oct | 36.3 °C | 32 % | 36 km/h | 0.0 mm | High 31 |
| 16 Oct | 36.5 °C | 31 % | 32 km/h | 0.0 mm | High 32 |
| 17 Oct | 36.8 °C | 31 % | 35 km/h | 0.0 mm | High 32 |
| 18 Oct | 35.7 °C | 40 % | 36 km/h | 8.5 mm | Low 8 |
| 19 Oct | 35.5 °C | 33 % | 37 km/h | 0.6 mm | High 22 |
| 20 Oct | 34.7 °C | 39 % | 30 km/h | 0.1 mm | High 23 |
| 21 Oct | 35.9 °C | 31 % | 43 km/h | 0.0 mm | High 33 |
| 22 Oct | 36.0 °C | 29 % | 38 km/h | 0.0 mm | High 32 |
| 23 Oct | 35.9 °C | 31 % | 35 km/h | 0.0 mm | High 32 |
| 24 Oct | 36.8 °C | 31 % | 34 km/h | 0.1 mm | High 33 |
| 25 Oct | 37.4 °C | 35 % | 34 km/h | 0.1 mm | High 36 |
| 26 Oct | 36.7 °C | 29 % | 35 km/h | 0.0 mm | High 36 |
| 27 Oct | 36.9 °C | 32 % | 26 km/h | 0.0 mm | High 33 |
| 28 Oct | 36.8 °C | 29 % | 31 km/h | 0.0 mm | High 36 |
| 29 Oct | 37.1 °C | 30 % | 34 km/h | 0.3 mm | High 37 |
| 30 Oct | 35.9 °C | 33 % | 37 km/h | 0.0 mm | Very high 38 |
| 31 Oct | 36.1 °C | 27 % | 32 km/h | 0.0 mm | High 37 |
| 1 Nov | 37.3 °C | 27 % | 35 km/h | 0.0 mm | Very high 40 |
| 2 Nov | 37.0 °C | 34 % | 35 km/h | 0.0 mm | Very high 41 |
| 3 Nov | 35.7 °C | 37 % | 40 km/h | 0.1 mm | Very high 40 |
| 4 Nov after | 36.9 °C | 28 % | 33 km/h | 0.1 mm | Very high 40 |
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 27 October 2026 the air beside the fire reached 38 µg/m³ of PM2.5. That day averaged 23: 1.6 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 · 1,618Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 20,404 haOriximiná4 October 2022 · 6 days · 20 km away
- 24,709 haÓbidosAugust 2023 · 17 days · 22 km away
- 18,242 haÓbidos19 October 2025 · 18 days · 24 km away
- 35,806 haOriximiná October 2026 · 12 days · 25 km away
- 22,633 haÓbidos10 October 2025 · 13 days · 31 km away
- 48,531 haÓbidosSeptember 2023 · 41 days · 37 km away
Frequently asked questions
- How long did the Oriximiná fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 19 September 2026 to 3 November 2026 (46 days). The perimeter dates it from 19 September 2026 to 1 November 2026.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 87,793 hectares (877.9 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Oriximiná (50,851 ha, 0.5 %); Óbidos (29,320 ha, 1.0 %).
- Is the Oriximiná fire still active?
- No fire detections since 3 Nov 2026, 05:54 UTC. A lack of detections is not an official extinction.
- What was the weather like?
- During the fire the temperature reached 37.4 °C, humidity dropped to 25 % and gusts hit 43 km/h. The fire danger index (FWI) reached 41, class Very 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 · 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 2 November 2026.
- Page published (87,793 ha).
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; 9 polygons grouped in this page.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 19 September 2026 to 1 November 2026. 1,618 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: ECMWF IFS model, provisional until the ERA5 reanalysis arrives.
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.