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Autazes fire, 29 September 2026 Autazes

Out · last detection 17 Oct 2026, 17:56 UTC

The fire started on 29 September 2026 in Autazes, Brazil, and satellites saw it burning for 19 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,996 hectares from heat detections, spread across a single municipality.

It is the 162th largest in Amazonas since 2016 (of 450 with a page). Number 347 in Brazil in 2026, of 749.

Burnt area
4,996ha
GWIS perimeter (Copernicus)
Duration
19days
29 Sept 2026 – 17 Oct 2026
Municipalities hit
1
municipalities
Started on
29 Sept
2026
Heat detections
201
in a single hotspot: 103 MW
Danger at start
0
Very low · FWI index
Energy released
2.5GW
sum of detected power

Where it burned

17 Oct 2026
HOTSPOTS BY DAY 29 Sept17 Oct

How it evolved, day by day

301345678910111214151617

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

36°high
43km/h · peak gust
35%lowest humidity

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

This area had burned before

23% of the perimeter overlaps earlier fires recorded since 2016: 1,138 ha in 2023.

What happened to each town

  1. Autazes 41,564 inhabitants where it started
    5,028 ha reached on 30 Sept
    0.6 %

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)
29 Sept 32.0 °C 58 % 19 km/h 2.3 mm Very low 0
30 Sept 35.2 °C 46 % 24 km/h 0.5 mm Very low 3
1 Oct 36.0 °C 43 % 26 km/h 0.1 mm Low 8
2 Oct 34.0 °C 50 % 23 km/h 0.5 mm Low 10
3 Oct 34.1 °C 43 % 25 km/h 0.5 mm Low 10
4 Oct 34.3 °C 48 % 26 km/h 1.1 mm Low 7
5 Oct 35.2 °C 46 % 26 km/h 1.6 mm Low 6
6 Oct 35.3 °C 44 % 38 km/h 0.5 mm Moderate 12
7 Oct 35.8 °C 35 % 43 km/h 0.7 mm Moderate 18
8 Oct 35.8 °C 38 % 35 km/h 0.0 mm Moderate 17
9 Oct 35.8 °C 42 % 31 km/h 0.0 mm Moderate 17
10 Oct 36.7 °C 36 % 26 km/h 0.3 mm Moderate 17

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 22 Sept 2026
After · 23 Oct 2026

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 9 October 2026 the air beside the fire reached 213 µg/m³ of PM2.5. That day averaged 96: 6.4 times the WHO daily guideline (15).

PM2.5 peak213 µg/m³
Days over the guideline12 days
PM10216 µg/m³
Optical depth1.86
27282930123456789
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 · 201Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Autazes fire last?
GWIS (Copernicus) dates it between 29 September 2026 and 17 October 2026: 19 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 4,996 hectares (50.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Autazes (5,028 ha, 0.6 %).
Is the Autazes fire still active?
No fire detections since 17 Oct 2026, 17:56 UTC. A lack of detections is not an official extinction.
What was the weather like?
During the fire the temperature reached 36.0 °C, humidity dropped to 35 % and gusts hit 43 km/h. The fire danger index (FWI) reached 18, class Moderate.
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
What do you think is wrong?

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.

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.