How long did the Óbidos fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 1 October 2026 to 26 October 2026 (26 days). The perimeter dates it from 5 October 2026 to 25 October 2026.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,012 hectares (90.1 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Óbidos (9,021 ha, 0.3 %); Oriximiná (54 ha, 0.0 %).

Is the Óbidos fire still active?

No fire detections since 26 Oct 2026, 05:04 UTC. A lack of detections is not an official extinction.

What was the weather like?

During the fire the temperature reached 40.0 °C, humidity dropped to 22 % and gusts hit 41 km/h. The fire danger index (FWI) reached 45, 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.

BR · Brazil · 2026-10-01 → 2026-10-26

Óbidos fire, 1 October 2026 Óbidos, Oriximiná

Dying down · last detection 26 Oct 2026, 05:04 UTC

The fire started on 1 October 2026 in Óbidos, Brazil, and satellites saw it burning for 26 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,012 hectares from heat detections, spread across 2 municipalities.

It is the 254th largest in Pará since 2016 (of 1099 with a page). Number 136 in Brazil in 2026, of 757.

Compare with…

Suggestions: Óbidos · 2026 Óbidos · 2026

Is it still active?

No detections since 26 Oct 2026, 05:04 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: 9,012ha; GWIS perimeter (Copernicus)
Duration: 26days; 1 Oct 2026 – 26 Oct 2026
Municipalities hit: 2; municipalities
Started on: 1 Oct; 2026
Heat detections: 311; in a single hotspot: 227 MW
Danger at start: 18; Moderate · FWI index
Average daily power: 177MW; detected power per day, on average

HOTSPOTS BY DAY 1 Oct26 Oct

Play back 26 Oct 2026

How it evolved, day by day

1 Oct 5 Oct 9 Oct 11 Oct 13 Oct 17 Oct 22 Oct 26 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

40°high

41km/h · peak gust

22%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started.

This area had burned before

11% of the perimeter overlaps earlier fires recorded since 2016: 993 ha in 2024.

How big is it?

It burned the equivalent of 5.7% of the area of London (90 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

Óbidos 52,229 inhabitants where it started

9,021 ha reached on 1 Oct

0.3 %
Oriximiná 20,136 inhabitants

54 ha reached on 16 Oct

0.0 %

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)
1 Oct	38.3 °C	35 %	32 km/h	2.6 mm	Moderate 18
2 Oct	37.6 °C	28 %	37 km/h	0.2 mm	High 31
3 Oct	38.3 °C	31 %	28 km/h	0.1 mm	High 32
4 Oct	38.4 °C	31 %	27 km/h	0.2 mm	High 31
5 Oct	38.1 °C	33 %	30 km/h	0.3 mm	High 32
6 Oct	37.5 °C	36 %	41 km/h	0.2 mm	High 36
7 Oct	39.5 °C	22 %	32 km/h	0.0 mm	Very high 39
8 Oct	39.6 °C	22 %	31 km/h	0.0 mm	Very high 39
9 Oct	39.0 °C	28 %	35 km/h	0.5 mm	Very high 45
10 Oct	39.2 °C	28 %	31 km/h	0.0 mm	Very high 38
11 Oct	39.5 °C	26 %	30 km/h	0.1 mm	Very high 41
12 Oct	39.8 °C	27 %	31 km/h	0.0 mm	Very high 40
13 Oct	39.0 °C	31 %	30 km/h	1.4 mm	High 27
14 Oct	39.3 °C	28 %	33 km/h	0.1 mm	High 36
15 Oct	39.3 °C	23 %	34 km/h	0.0 mm	Very high 40
16 Oct	39.1 °C	25 %	34 km/h	0.0 mm	Very high 41
17 Oct	38.6 °C	29 %	32 km/h	0.4 mm	Very high 40
18 Oct	36.6 °C	43 %	23 km/h	12.0 mm	Low 6
19 Oct	36.7 °C	39 %	24 km/h	1.9 mm	Low 11
20 Oct	38.3 °C	32 %	28 km/h	0.0 mm	High 25
21 Oct	37.9 °C	31 %	38 km/h	0.5 mm	High 31
22 Oct	38.5 °C	26 %	41 km/h	0.0 mm	High 34
23 Oct	38.9 °C	27 %	32 km/h	0.0 mm	High 33
24 Oct	40.0 °C	25 %	32 km/h	0.0 mm	High 35
25 Oct	39.9 °C	29 %	31 km/h	0.5 mm	High 34
26 Oct	38.9 °C	26 %	34 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.

↔

Before · 24 Sept 2026

After · 25 Oct 2026

Before After

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 11 October 2026 the air beside the fire reached 85 µg/m³ of PM2.5. That day averaged 35: 2.3 times the WHO daily guideline (15).

PM2.5 peak85 µg/m³

Days over the guideline4 days

PM1086 µg/m³

Optical depth0.96

WHO 15

29301234567891011

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 · 311Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Óbidos fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 1 October 2026 to 26 October 2026 (26 days). The perimeter dates it from 5 October 2026 to 25 October 2026.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,012 hectares (90.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Óbidos (9,021 ha, 0.3 %); Oriximiná (54 ha, 0.0 %).
Is the Óbidos fire still active?: No fire detections since 26 Oct 2026, 05:04 UTC. A lack of detections is not an official extinction.
What was the weather like?: During the fire the temperature reached 40.0 °C, humidity dropped to 22 % and gusts hit 41 km/h. The fire danger index (FWI) reached 45, 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 ›

INPE · Programa Queimadas ↗
IBAMA · Prevfogo ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

26 October 2026 Area: 5,918 → 9,012 ha.

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?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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 193.

How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
Dates adjusted with the VIIRS detections inside the perimeter, which said 5 October 2026 to 25 October 2026. 311 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.

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.