How long did the Chemini fire last?

Copernicus dates it between 7 August 2025 and 7 August 2025: 1 day between the first and last image with fire.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 102 hectares (1.0 km²). Official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Ouzellaguen (70 ha, 1.2 %); Chemini (32 ha, 0.8 %).

Did the fire reach a town?

The closest fire to a town centre came within 4.2 km of Chemini. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.

What was the weather like?

During the fire the temperature reached 33.7 °C, humidity dropped to 21 % and gusts hit 37 km/h. The fire danger index (FWI) reached 35, class High.

Where does this data come from?

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

DZ · Algeria · 2025-08-07 → 2025-08-07

Chemini fire, August 2025 شميني · Ouzellaguen, Chemini

Out · last detection 7 Aug 2025, 13:04 UTC

The fire started on 7 August 2025 in Chemini, Algeria, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 102 hectares from satellite imagery, spread across 2 municipalities.

It is the 100th largest in Bejaia since 2016 (of 101 with a page). Number 34 in Algeria in 2025, of 35.

Burnt area: 102ha; Copernicus perimeter
Duration: 1day; 7 Aug 2025 – 7 Aug 2025
Municipalities hit: 2; communes
Started on: 7 Aug; 2025
Heat detections: 2; in a single hotspot: 425 MW
Danger at start: 35; High · FWI index
Energy released: 459MW; sum of detected power

HOTSPOTS BY DAY 7 Aug7 Aug

How it evolved, day by day

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

37km/h · peak gust

21%lowest humidity

It had gone 12 days without rain (1 mm or more) when it started.

This area had burned before

11% of the perimeter overlaps earlier fires recorded since 2016: 11 ha in 2023.

11 ha Ouzellaguen fire, August 2023 114 ha in total; the hectares shown are those it shares with this fire

What happened to each town

Ouzellaguen أوزلاقن 22,719 inhabitants · 5.5 km from the town

70 ha

1.2 %
Chemini شميني 15,274 inhabitants · 4.2 km from the town where it started

32 ha reached on 7 Aug

0.8 %

Burnt area inside each municipality, from crossing the official 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.

What burned

Other natural land52 %
Mixed forest48 %

Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).

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)
7 Aug	33.7 °C	21 %	37 km/h	0.0 mm	High 35
8 Aug after	32.8 °C	28 %	37 km/h	0.1 mm	High 34
9 Aug after	31.4 °C	33 %	35 km/h	0.1 mm	High 32
10 Aug after	29.9 °C	35 %	37 km/h	0.4 mm	High 32
11 Aug after	28.9 °C	35 %	38 km/h	0.0 mm	High 31
12 Aug after	29.3 °C	28 %	40 km/h	0.0 mm	High 32
13 Aug after	30.4 °C	27 %	41 km/h	0.0 mm	High 31
14 Aug after	31.2 °C	26 %	36 km/h	0.0 mm	High 30
15 Aug after	31.6 °C	24 %	37 km/h	0.0 mm	High 35
16 Aug after	30.1 °C	34 %	41 km/h	0.0 mm	High 33
17 Aug after	31.6 °C	27 %	53 km/h	0.0 mm	High 37

Before and after, from space

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

↔

Before · 31 Jul 2025

After · 14 Aug 2025

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 August 2025 the air beside the fire reached 12 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak12 µg/m³

Days over the guideline0 days

PM1020 µg/m³

Optical depth0.30

5678910

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 · 2Every 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 Algeria ›

Frequently asked questions

How long did the Chemini fire last?: Copernicus dates it between 7 August 2025 and 7 August 2025: 1 day between the first and last image with fire.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 102 hectares (1.0 km²). Official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Ouzellaguen (70 ha, 1.2 %); Chemini (32 ha, 0.8 %).
Did the fire reach a town?: The closest fire to a town centre came within 4.2 km of Chemini. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?: During the fire the temperature reached 33.7 °C, humidity dropped to 21 % and gusts hit 37 km/h. The fire danger index (FWI) reached 35, class High.
Where does this data come from?: From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Algeria (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: 14 · 1021

Satellite cross-check

NASA FIRMS ↗
EFFIS · Copernicus ↗

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?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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 14 · 1021.

Where this data comes from

The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. 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 ADM3 (Creative Commons Attribution-ShareAlike 2.0). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.

Where it burned