How long did the Guadalupe fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 24 June 2026 to 14 July 2026 (21 days). The perimeter dates it from 1 July 2026 to 14 July 2026.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,049 hectares (40.5 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 3 municipalities: Guadalupe (4,009 ha, 3.9 %); Marcos Parente (37 ha, 0.1 %); Jerumenha (30 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 40.0 °C, humidity dropped to 21 % and gusts hit 25 km/h. The fire danger index (FWI) reached 25, 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.

BR · Brazil · 2026-06-24 → 2026-07-14

Guadalupe fire, June 2026 Guadalupe, Marcos Parente, Jerumenha

Out · last detection 10 Jul 2026, 05:08 UTC

The fire started on 24 June 2026 in Guadalupe, Brazil, and satellites saw it burning for 21 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,049 hectares from heat detections, spread across 3 municipalities.

It is the 506th largest in Piaui since 2016 (of 804 with a page). Number 488 in Brazil in 2026, of 751.

Compare with…

Suggestions: Jerumenha · 2017 Porto Alegre do Piauí · 2019

Burnt area: 4,049ha; GWIS perimeter (Copernicus)
Duration: 21days; 24 Jun 2026 – 14 Jul 2026
Municipalities hit: 3; municipalities
Started on: 24 Jun; 2026
Heat detections: 301; in a single hotspot: 91 MW
Danger at start: 5; Very low · FWI index
Average daily power: 289MW; detected power per day, on average

HOTSPOTS BY DAY 24 Jun14 Jul

Play back 10 Jul 2026

How it evolved, day by day

27 Jun 30 Jun 2 Jul 4 Jul 6 Jul 7 Jul 8 Jul 10 Jul

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

25km/h · peak gust

21%lowest humidity

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

This area had burned before

43% of the perimeter overlaps earlier fires recorded since 2016: 1,437 ha in 2023, 604 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 1,739 ha that had burned before.

How big is it?

It burned the equivalent of 2.6% of the area of London (40 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

Guadalupe 10,270 inhabitants where it started

4,009 ha reached on 27 Jun

3.9 %
Marcos Parente 4,724 inhabitants

37 ha

0.1 %
Jerumenha 4,497 inhabitants

30 ha

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.

People and buildings inside the perimeter

GHSL 2025

Built-up area< 0.1 ha

Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

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)
8 Jul	27.8 °C	33 %	7 km/h	0.0 mm	Very low 5
9 Jul	35.5 °C	29 %	16 km/h	0.0 mm	Moderate 11
10 Jul	36.2 °C	27 %	19 km/h	0.0 mm	Moderate 16
11 Jul	36.8 °C	23 %	16 km/h	0.0 mm	Moderate 17
12 Jul	37.7 °C	21 %	15 km/h	0.0 mm	Moderate 20
13 Jul	40.0 °C	22 %	8 km/h	0.0 mm	Moderate 19
14 Jul	37.5 °C	31 %	15 km/h	0.8 mm	Moderate 18
15 Jul after	31.1 °C	41 %	19 km/h	11.6 mm	Very low 2
16 Jul after	32.8 °C	31 %	25 km/h	0.0 mm	Moderate 16
17 Jul after	34.0 °C	27 %	22 km/h	0.0 mm	Moderate 21
18 Jul after	33.8 °C	30 %	21 km/h	0.0 mm	High 22
19 Jul after	33.8 °C	21 %	21 km/h	0.0 mm	High 25
20 Jul after	34.0 °C	28 %	20 km/h	0.0 mm	High 26
21 Jul after	36.0 °C	25 %	19 km/h	0.0 mm	High 27
22 Jul after	36.5 °C	26 %	18 km/h	0.0 mm	High 28
23 Jul after	36.5 °C	23 %	18 km/h	0.0 mm	High 29
24 Jul after	36.8 °C	25 %	21 km/h	0.0 mm	High 33
25 Jul after	34.2 °C	32 %	14 km/h	0.9 mm	High 21
26 Jul after	37.2 °C	23 %	16 km/h	0.0 mm	High 31
27 Jul after	36.2 °C	27 %	27 km/h	0.0 mm	High 33
28 Jul after	35.0 °C	27 %	34 km/h	0.0 mm	High 33
29 Jul after	36.0 °C	26 %	34 km/h	0.0 mm	High 34

Before and after, from space

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

↔

Before · 17 Jun 2026

After · 21 Jul 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 9 July 2026 the air beside the fire reached 81 µg/m³ of PM2.5. That day averaged 37: 2.5 times the WHO daily guideline (15).

PM2.5 peak81 µg/m³

Days over the guideline5 days

PM1082 µg/m³

Optical depth0.44

WHO 15

25262728293012345678910111213141516171819202122

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 · 301Every 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 Guadalupe fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 24 June 2026 to 14 July 2026 (21 days). The perimeter dates it from 1 July 2026 to 14 July 2026.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,049 hectares (40.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 3 municipalities: Guadalupe (4,009 ha, 3.9 %); Marcos Parente (37 ha, 0.1 %); Jerumenha (30 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 40.0 °C, humidity dropped to 21 % and gusts hit 25 km/h. The fire danger index (FWI) reached 25, 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 · 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.

25 October 2026 Start date: 1 July 2026 → 24 June 2026.

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.

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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?

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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.

How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
Dates adjusted with the VIIRS detections inside the perimeter, which said 1 July 2026 to 14 July 2026. 301 Suomi-NPP VIIRS detections on those dates.
We have not matched this page with any official record.
Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

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.

Where it burned