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Apuí fire, 15 August 2026 Apuí

Out · last detection 24 Sept 2026, 04:46 UTC

The fire started on 15 August 2026 in Apuí, Brazil, and satellites saw it burning for 41 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 20,187 hectares from heat detections, spread across a single municipality.

It is the 11th largest in Amazonas since 2016 (of 450 with a page). Number 30 in Brazil in 2026, of 749.

Burnt area
20,187ha
GWIS perimeter (Copernicus)
Duration
41days
15 Aug 2026 – 24 Sept 2026
Municipalities hit
1
municipalities
Started on
15 Aug
2026
Heat detections
1,725
in a single hotspot: 537 MW
Danger at start
28
High · FWI index
Energy released
25.7GW
sum of detected power

Where it burned

24 Sept 2026
HOTSPOTS BY DAY 15 Aug24 Sept

How it evolved, day by day

15161718192021222324252627282930311234567891011121314151718192021222324

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

The weather it burned in

37°high
42km/h · peak gust
24%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started.

This area had burned before

79% of the perimeter overlaps earlier fires recorded since 2016: 1,013 ha in 2017, 3,175 ha in 2019, 3,904 ha in 2021, 6,647 ha in 2022, 10,856 ha in 2023, 14,704 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 16,028 ha that had burned before.

What happened to each town

  1. Apuí 20,647 inhabitants where it started
    20,283 ha reached on 15 Aug
    0.4 %

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)
15 Aug 36.3 °C 24 % 32 km/h 0.0 mm High 28
16 Aug 35.3 °C 34 % 26 km/h 0.0 mm High 26
17 Aug 34.7 °C 43 % 42 km/h 0.2 mm High 26
18 Aug 34.5 °C 43 % 35 km/h 0.0 mm High 24
19 Aug 35.9 °C 37 % 24 km/h 0.0 mm High 23
20 Aug 36.3 °C 33 % 21 km/h 0.0 mm High 24
21 Aug 36.9 °C 30 % 25 km/h 0.0 mm High 27
22 Aug 36.5 °C 30 % 27 km/h 0.0 mm High 29
23 Aug 30.0 °C 70 % 25 km/h 3.1 mm Very low 4
24 Aug 34.8 °C 43 % 18 km/h 0.0 mm Moderate 12
25 Aug 37.3 °C 26 % 24 km/h 0.0 mm High 26
26 Aug 35.8 °C 39 % 21 km/h 0.0 mm High 26
27 Aug 33.8 °C 52 % 30 km/h 2.2 mm Low 9
28 Aug 35.4 °C 41 % 27 km/h 0.0 mm Moderate 19
29 Aug 36.1 °C 36 % 23 km/h 0.0 mm High 23
30 Aug 35.8 °C 40 % 23 km/h 0.0 mm High 23
31 Aug 36.1 °C 39 % 26 km/h 0.0 mm High 24
1 Sept 35.9 °C 43 % 21 km/h 0.0 mm High 24
2 Sept 36.0 °C 41 % 22 km/h 0.0 mm High 24
3 Sept 33.4 °C 54 % 24 km/h 0.4 mm Moderate 20
4 Sept 34.3 °C 48 % 26 km/h 0.5 mm Moderate 21
5 Sept 33.3 °C 52 % 24 km/h 1.6 mm Low 11
6 Sept 33.4 °C 49 % 31 km/h 0.0 mm Moderate 19
7 Sept 32.2 °C 59 % 32 km/h 4.3 mm Very low 5
8 Sept 31.2 °C 63 % 24 km/h 1.7 mm Very low 4
9 Sept 33.8 °C 49 % 32 km/h 0.5 mm Moderate 14
10 Sept 31.8 °C 68 % 24 km/h 10.9 mm Very low 0
11 Sept 32.5 °C 60 % 29 km/h 3.0 mm Very low 2
12 Sept 34.3 °C 50 % 23 km/h 0.0 mm Low 6
13 Sept 34.6 °C 47 % 27 km/h 0.0 mm Moderate 12
14 Sept 33.5 °C 55 % 21 km/h 8.8 mm Very low 1
15 Sept 32.9 °C 56 % 22 km/h 3.5 mm Very low 1
16 Sept 36.2 °C 38 % 33 km/h 0.1 mm Low 11
17 Sept 34.1 °C 52 % 33 km/h 1.0 mm Low 7
18 Sept 34.7 °C 51 % 28 km/h 0.4 mm Low 9
19 Sept 34.5 °C 50 % 27 km/h 2.5 mm Very low 3
20 Sept 35.0 °C 44 % 34 km/h 0.0 mm Low 10
21 Sept 35.9 °C 37 % 27 km/h 0.0 mm Moderate 15
22 Sept 37.4 °C 31 % 25 km/h 0.0 mm Moderate 18
23 Sept 36.2 °C 42 % 21 km/h 0.8 mm Moderate 14
24 Sept 35.2 °C 52 % 19 km/h 10.1 mm Very low 1
25 Sept after 31.6 °C 68 % 26 km/h 10.9 mm Very low 0
26 Sept after 32.0 °C 64 % 25 km/h 1.0 mm Very low 1
27 Sept after 32.5 °C 64 % 23 km/h 3.2 mm Very low 1
28 Sept after 32.6 °C 61 % 24 km/h 6.2 mm Very low 0
29 Sept after 32.4 °C 58 % 28 km/h 0.2 mm Very low 1
30 Sept after 34.0 °C 48 % 28 km/h 0.0 mm Very low 5
1 Oct after 35.4 °C 43 % 23 km/h 0.6 mm Low 8
2 Oct after 32.8 °C 60 % 30 km/h 0.8 mm Low 5

Before and after, from space

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

Before · 8 Aug 2026
After · 1 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 23 August 2026 the air beside the fire reached 840 µg/m³ of PM2.5. That day averaged 320: 21 times the WHO daily guideline (15).

PM2.5 peak840 µg/m³
Days over the guideline48 days
PM10853 µg/m³
Optical depth3.19
131415161718192021222324252627282930311234567891011121314151617181920212223242526272829301
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 · 1,725Every 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 Apuí fire last?
GWIS (Copernicus) dates it between 15 August 2026 and 24 September 2026: 41 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 20,187 hectares (201.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Apuí (20,283 ha, 0.4 %).
What was the weather like?
During the fire the temperature reached 37.4 °C, humidity dropped to 24 % and gusts hit 42 km/h. The fire danger index (FWI) reached 29, 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
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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.