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Juara fire, August 2026 Juara

Out · last detection 23 Aug 2026, 17:20 UTC

The fire started on 5 August 2026 in Juara, Brazil, and satellites saw it burning for 19 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,089 hectares from heat detections, spread across a single municipality.

It is the 1382th largest in Mato Grosso since 2016 (of 1996 with a page). Number 480 in Brazil in 2026, of 749.

Burnt area
4,089ha
GWIS perimeter (Copernicus)
Duration
19days
5 Aug 2026 – 23 Aug 2026
Municipalities hit
1
municipalities
Started on
5 Aug
2026
Heat detections
154
in a single hotspot: 110 MW
Danger at start
30
High · FWI index
Energy released
2.1GW
sum of detected power

Where it burned

23 Aug 2026
HOTSPOTS BY DAY 5 Aug23 Aug

How it evolved, day by day

67910111314151617181920212223

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
41km/h · peak gust
19%lowest humidity

It had gone 23 days without rain (1 mm or more) when it started.

This area had burned before

93% of the perimeter overlaps earlier fires recorded since 2016: 3,028 ha in 2021, 3,793 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 3,807 ha that had burned before.

What happened to each town

  1. Juara 34,906 inhabitants where it started
    4,111 ha reached on 6 Aug
    0.2 %

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)
5 Aug 34.2 °C 25 % 28 km/h 0.0 mm High 30
6 Aug 33.7 °C 29 % 29 km/h 0.0 mm High 30
7 Aug 33.8 °C 34 % 16 km/h 0.0 mm High 27
8 Aug 34.7 °C 34 % 24 km/h 0.0 mm High 29
9 Aug 35.5 °C 33 % 23 km/h 0.0 mm High 29
10 Aug 36.8 °C 25 % 29 km/h 0.0 mm High 33
11 Aug 35.0 °C 36 % 27 km/h 0.0 mm High 31
12 Aug 34.0 °C 32 % 35 km/h 0.0 mm High 34
13 Aug 34.7 °C 29 % 32 km/h 0.0 mm High 34
14 Aug 35.3 °C 23 % 26 km/h 0.0 mm High 34
15 Aug 36.2 °C 20 % 34 km/h 0.0 mm Very high 40
16 Aug 36.7 °C 20 % 36 km/h 0.0 mm Very high 41
17 Aug 36.5 °C 22 % 36 km/h 0.0 mm Very high 42
18 Aug 35.8 °C 21 % 36 km/h 0.0 mm Very high 43
19 Aug 36.5 °C 19 % 41 km/h 0.0 mm Very high 46
20 Aug 36.8 °C 20 % 18 km/h 0.0 mm High 36
21 Aug 35.3 °C 30 % 29 km/h 0.0 mm High 37
22 Aug 36.1 °C 26 % 32 km/h 0.0 mm High 38
23 Aug 35.7 °C 28 % 25 km/h 0.0 mm High 36
24 Aug after 35.6 °C 34 % 30 km/h 0.2 mm High 35
25 Aug after 36.5 °C 32 % 20 km/h 0.0 mm High 33
26 Aug after 36.5 °C 28 % 24 km/h 0.0 mm High 34
27 Aug after 35.8 °C 34 % 32 km/h 0.0 mm High 36
28 Aug after 35.1 °C 38 % 35 km/h 0.0 mm High 35
29 Aug after 36.0 °C 36 % 20 km/h 0.0 mm High 30
30 Aug after 36.2 °C 29 % 20 km/h 0.0 mm High 30
31 Aug after 35.4 °C 41 % 24 km/h 0.0 mm High 30
1 Sept after 34.9 °C 43 % 30 km/h 0.4 mm High 30
2 Sept after 32.7 °C 50 % 27 km/h 0.0 mm High 24

Before and after, from space

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

Before · 29 Jul 2026
After · 30 Aug 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 24 August 2026 the air beside the fire reached 28 µg/m³ of PM2.5. That day averaged 19: 1.3 times the WHO daily guideline (15).

PM2.5 peak28 µg/m³
Days over the guideline1 day
PM1029 µg/m³
Optical depth0.43
34567891011121314151617181920212223242526
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 · 154Every 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 Juara fire last?
GWIS (Copernicus) dates it between 5 August 2026 and 23 August 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 4,089 hectares (40.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Juara (4,111 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 36.8 °C, humidity dropped to 19 % and gusts hit 41 km/h. The fire danger index (FWI) reached 46, 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

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.