How long did the Cacolo fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 5 August 2026 to 3 September 2026 (30 days). The perimeter dates it from 10 August 2026 to 29 August 2026.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 12,515 hectares (125.2 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Cacolo (12,577 ha, 1.0 %).

What was the weather like?

During the fire the temperature reached 34.4 °C, humidity dropped to 16 % and gusts hit 53 km/h. The fire danger index (FWI) reached 49, class Very high.

Where does this data come from?

From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Angola (geoBoundaries). It is not an official report.

AO · Angola · 2026-08-05 → 2026-09-03

Cacolo fire, 5 August 2026 Cacolo

Out · last detection 3 Sept 2026, 12:10 UTC

The fire started on 5 August 2026 in Cacolo, Angola, and satellites saw it burning for 30 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 12,515 hectares from heat detections, spread across a single municipality.

It is the 29th largest in Lunda Sul since 2016 (of 240 with a page). Number 121 in Angola in 2026, of 486.

Compare with…

Suggestions: Cacolo · 2019 Cacolo · 2026 Cacolo · 2016 Cacolo · 2020

Burnt area: 12,515ha; GWIS perimeter (Copernicus)
Duration: 30days; 5 Aug 2026 – 3 Sept 2026
Municipalities hit: 1; municipalities
Started on: 5 Aug; 2026
Heat detections: 364; in a single hotspot: 120 MW
Danger at start: 43; Very high · FWI index
Average daily power: 134MW; detected power per day, on average

HOTSPOTS BY DAY 5 Aug3 Sept

Play back 3 Sept 2026

How it evolved, day by day

5 Aug 10 Aug 14 Aug 19 Aug 23 Aug 27 Aug 31 Aug

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

The weather it burned in

34°high

53km/h · peak gust

16%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 4 Sept.

This area had burned before

76% of the perimeter overlaps earlier fires recorded since 2016: 3,139 ha in 2016, 4,126 ha in 2017, 4,723 ha in 2018, 3,502 ha in 2019, 3,856 ha in 2020, 3,851 ha in 2022, 4,440 ha in 2023, 1,892 ha in 2024, 3,772 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 9,531 ha that had burned before.

722 ha Cacolo fire, August 2019 5,919 ha in total; the hectares shown are those it shares with this fire

How big is it?

It burned the equivalent of 7.9% of the area of London (125 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

Cacolo where it started

12,577 ha reached on 5 Aug

1.0 %

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)
5 Aug	31.4 °C	20 %	35 km/h	0.0 mm	Very high 43
6 Aug	31.6 °C	19 %	36 km/h	0.0 mm	Very high 44
7 Aug	31.2 °C	21 %	40 km/h	0.0 mm	Very high 44
8 Aug	31.0 °C	25 %	39 km/h	0.0 mm	Very high 43
9 Aug	31.2 °C	24 %	30 km/h	0.0 mm	Very high 42
10 Aug	32.3 °C	19 %	18 km/h	0.0 mm	Very high 41
11 Aug	31.0 °C	21 %	35 km/h	0.0 mm	Very high 44
12 Aug	31.7 °C	20 %	44 km/h	0.0 mm	Very high 46
13 Aug	30.8 °C	31 %	41 km/h	0.0 mm	Very high 41
14 Aug	30.6 °C	34 %	47 km/h	0.3 mm	Very high 41
15 Aug	31.4 °C	30 %	44 km/h	0.0 mm	Very high 40
16 Aug	30.7 °C	25 %	45 km/h	0.0 mm	Very high 40
17 Aug	31.2 °C	21 %	42 km/h	0.0 mm	Very high 42
18 Aug	31.8 °C	16 %	41 km/h	0.0 mm	Very high 45
19 Aug	31.7 °C	19 %	41 km/h	0.0 mm	Very high 46
20 Aug	31.3 °C	19 %	40 km/h	0.0 mm	Very high 46
21 Aug	31.9 °C	24 %	32 km/h	0.0 mm	Very high 44
22 Aug	32.6 °C	25 %	37 km/h	0.0 mm	Very high 44
23 Aug	33.5 °C	22 %	43 km/h	0.0 mm	Very high 47
24 Aug	33.2 °C	23 %	46 km/h	0.0 mm	Very high 48
25 Aug	32.9 °C	26 %	39 km/h	0.0 mm	Very high 44
26 Aug	32.0 °C	30 %	36 km/h	0.0 mm	Very high 40
27 Aug	34.3 °C	22 %	45 km/h	0.0 mm	Very high 46
28 Aug	33.4 °C	27 %	53 km/h	0.0 mm	Very high 49
29 Aug	32.1 °C	27 %	38 km/h	0.0 mm	Very high 43
30 Aug	32.5 °C	29 %	28 km/h	0.0 mm	High 36
31 Aug	32.1 °C	32 %	22 km/h	0.0 mm	High 34
1 Sept	33.6 °C	26 %	35 km/h	0.0 mm	High 35
2 Sept	34.4 °C	24 %	30 km/h	0.0 mm	High 37
3 Sept	32.3 °C	37 %	30 km/h	0.0 mm	High 35
4 Sept after	30.8 °C	42 %	40 km/h	1.7 mm	Moderate 18

Before and after, from space

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

↔

Before · 29 Jul 2026

After · 10 Sept 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 20 August 2026 the air beside the fire reached 125 µg/m³ of PM2.5. That day averaged 70: 4.6 times the WHO daily guideline (15).

PM2.5 peak125 µg/m³

Days over the guideline35 days

PM10129 µg/m³

Optical depth1.85

WHO 15

345678910111213141516171819202122232425262728293031123456

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 · 364Every 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 Angola ›

Frequently asked questions

How long did the Cacolo fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 5 August 2026 to 3 September 2026 (30 days). The perimeter dates it from 10 August 2026 to 29 August 2026.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 12,515 hectares (125.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Cacolo (12,577 ha, 1.0 %).
What was the weather like?: During the fire the temperature reached 34.4 °C, humidity dropped to 16 % and gusts hit 53 km/h. The fire danger index (FWI) reached 49, class Very high.
Where does this data come from?: From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Angola (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.

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

No changes since 24 October 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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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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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 10 August 2026 to 29 August 2026. 364 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 (Public Domain). 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