Óbidos fire, 19 October 2025 Óbidos
The fire started on 19 October 2025 in Óbidos, Brazil, and satellites saw it burning for 18 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 18,242 hectares from heat detections, spread across a single municipality.
It is the 106th largest in Pará since 2016 (of 1099 with a page). Number 41 in Brazil in 2025, of 714.
Compare with…
- Burnt area
- 18,242ha
- GWIS perimeter (Copernicus)
- Duration
- 18days
- 19 Oct 2025 – 5 Nov 2025
- Municipalities hit
- 1
- municipalities
- Started on
- 19 Oct
- 2025
- Heat detections
- 381
- in a single hotspot: 78 MW
- Danger at start
- 28
- High · FWI index
- Average daily power
- 127MW
- 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 10 days without rain (1 mm or more) when it started. Rain came after the fire: 12.6 mm on 6 Nov.
This area had burned before
96% of the perimeter overlaps earlier fires recorded since 2016: 9,274 ha in 2016, 3,186 ha in 2017, 3,871 ha in 2018, 10,143 ha in 2020, 14,540 ha in 2023, 167 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 17,484 ha that had burned before.
- 14,152 ha Óbidos fire, August 2023 24,709 ha in total; the hectares shown are those it shares with this fire
- 8,868 ha Oriximiná fire, October 2020 14,153 ha in total; the hectares shown are those it shares with this fire
- 7,665 ha Óbidos fire, November 2016 9,748 ha in total; the hectares shown are those it shares with this fire
- 3,871 ha Óbidos fire, October 2018 4,711 ha in total; the hectares shown are those it shares with this fire
- 2,101 ha Óbidos fire, October 2017 6,671 ha in total; the hectares shown are those it shares with this fire
- 388 ha Óbidos fire, September 2023 48,531 ha in total; the hectares shown are those it shares with this fire
- 3 ha Óbidos fire, October 2017 8,878 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
-
18,373 ha reached on 19 Oct0.6 %
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.
People and buildings inside the perimeter
GHSL 2025Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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) |
|---|---|---|---|---|---|
| 19 Oct | 36.5 °C | 26 % | 31 km/h | 0.0 mm | High 28 |
| 20 Oct | 34.3 °C | 37 % | 23 km/h | 0.0 mm | High 27 |
| 21 Oct | 33.1 °C | 45 % | 28 km/h | 1.7 mm | Moderate 12 |
| 22 Oct | 34.8 °C | 36 % | 44 km/h | 0.8 mm | High 24 |
| 23 Oct | 34.9 °C | 36 % | 44 km/h | 0.2 mm | High 29 |
| 24 Oct | 35.1 °C | 33 % | 37 km/h | 0.0 mm | High 28 |
| 25 Oct | 35.6 °C | 30 % | 37 km/h | 0.0 mm | High 31 |
| 26 Oct | 36.0 °C | 32 % | 40 km/h | 0.0 mm | High 29 |
| 27 Oct | 34.7 °C | 34 % | 39 km/h | 0.0 mm | High 34 |
| 28 Oct | 35.4 °C | 35 % | 42 km/h | 0.0 mm | High 34 |
| 29 Oct | 35.4 °C | 29 % | 38 km/h | 0.0 mm | High 32 |
| 30 Oct | 35.5 °C | 34 % | 33 km/h | 0.0 mm | High 30 |
| 31 Oct | 35.4 °C | 28 % | 31 km/h | 1.6 mm | High 24 |
| 1 Nov | 34.3 °C | 43 % | 30 km/h | 0.6 mm | High 23 |
| 2 Nov | 34.2 °C | 40 % | 31 km/h | 0.6 mm | High 25 |
| 3 Nov | 35.1 °C | 35 % | 37 km/h | 0.1 mm | High 30 |
| 4 Nov | 36.9 °C | 27 % | 34 km/h | 0.1 mm | High 35 |
| 5 Nov | 33.6 °C | 48 % | 32 km/h | 10.4 mm | Very low 4 |
| 6 Nov after | 33.1 °C | 48 % | 36 km/h | 12.6 mm | Very low 3 |
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 7 November 2025 the air beside the fire reached 24 µg/m³ of PM2.5, but no daily average passed the WHO 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 · 381Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 24,709 haÓbidosAugust 2023 · 17 days · 4 km away
- 48,531 haÓbidosSeptember 2023 · 41 days · 17 km away
- 39,056 haÓbidos28 September 2026 · 20 days · 18 km away
- 22,633 haÓbidos10 October 2025 · 13 days · 18 km away
- 22,307 haÓbidos23 October 2018 · 13 days · 23 km away
- 33,649 haOriximiná19 September 2026 · 29 days · 24 km away
Frequently asked questions
- How long did the Óbidos fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 19 October 2025 to 5 November 2025 (18 days). The perimeter dates it from 21 October 2025 to 5 November 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 18,242 hectares (182.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Óbidos (18,373 ha, 0.6 %).
- What was the weather like?
- During the fire the temperature reached 36.9 °C, humidity dropped to 26 % and gusts hit 44 km/h. The fire danger index (FWI) reached 35, 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 · 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 24 October 2026.
- Start date: 21 October 2025 → 19 October 2025.
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.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 21 October 2025 to 5 November 2025. 381 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.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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.