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Dianópolis fire, July 2026 Dianópolis, Formosa do Rio Preto

Out · last detection 7 Jul 2026, 04:25 UTC

The fire started on 3 July 2026 in Dianópolis, Brazil, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,830 hectares from heat detections, spread across 2 municipalities.

It is the 622th largest in Tocantins since 2016 (of 1242 with a page). Number 362 in Brazil in 2026, of 749.

Burnt area
4,830ha
GWIS perimeter (Copernicus)
Duration
5days
3 Jul 2026 – 7 Jul 2026
Municipalities hit
2
municipalities
Started on
3 Jul
2026
Heat detections
109
in a single hotspot: 70 MW
Danger at start
38
High · FWI index
Energy released
2.0GW
sum of detected power

Where it burned

7 Jul 2026
HOTSPOTS BY DAY 3 Jul7 Jul

How it evolved, day by day

34567

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

The weather it burned in

31°high
39km/h · peak gust
28%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

90% of the perimeter overlaps earlier fires recorded since 2016: 1,530 ha in 2016, 385 ha in 2020, 1,776 ha in 2021, 1,523 ha in 2022, 1,772 ha in 2024, 206 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 4,325 ha that had burned before.

What happened to each town

  1. Dianópolis 2,866 inhabitants where it started
    4,824 ha reached on 3 Jul
    1.4 %
  2. Formosa do Rio Preto 25,899 inhabitants
    30 ha
    0.0 %

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)
3 Jul 29.4 °C 28 % 39 km/h 0.0 mm High 38
4 Jul 29.8 °C 33 % 34 km/h 0.0 mm High 35
5 Jul 30.6 °C 31 % 38 km/h 0.0 mm High 37
6 Jul 30.3 °C 30 % 34 km/h 0.0 mm High 36
7 Jul 30.0 °C 29 % 31 km/h 0.0 mm High 36
8 Jul after 31.0 °C 29 % 30 km/h 0.0 mm High 35
9 Jul after 30.9 °C 30 % 38 km/h 0.0 mm Very high 38
10 Jul after 30.0 °C 34 % 38 km/h 0.0 mm High 37
11 Jul after 30.5 °C 33 % 34 km/h 0.0 mm High 37
12 Jul after 29.7 °C 35 % 24 km/h 0.0 mm High 32
13 Jul after 30.8 °C 34 % 19 km/h 0.0 mm High 30
14 Jul after 31.9 °C 30 % 24 km/h 0.0 mm High 35
15 Jul after 28.8 °C 48 % 42 km/h 0.0 mm High 32
16 Jul after 28.7 °C 31 % 47 km/h 0.0 mm Very high 39
17 Jul after 28.0 °C 32 % 50 km/h 0.0 mm Very high 42

Before and after, from space

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

Before · 26 Jun 2026
After · 14 Jul 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 3 July 2026 the air beside the fire reached 18 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak18 µg/m³
Days over the guideline0 days
PM1020 µg/m³
Optical depth0.18
12345678910
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 · 109Every 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 Dianópolis fire last?
GWIS (Copernicus) dates it between 3 July 2026 and 7 July 2026: 5 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 4,830 hectares (48.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Dianópolis (4,824 ha, 1.4 %); Formosa do Rio Preto (30 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 30.6 °C, humidity dropped to 28 % and gusts hit 39 km/h. The fire danger index (FWI) reached 38, 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.