How long did the Ain Larbi fire last?

Copernicus dates it between 21 July 2026 and 21 July 2026: 1 day between the first and last image with fire.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 133 hectares (1.3 km²). Official national figures may differ.

Which municipalities burned?

The fire only entered Ain Larbi (134 ha, 0.8 %).

Did the fire reach a town?

The fire started in Ain Larbi and came within 7.2 km of its centre. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.

What was the weather like?

During the fire the temperature reached 41.2 °C, humidity dropped to 7 % and gusts hit 24 km/h. The fire danger index (FWI) reached 62, class Extreme.

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 · 2026-07-21 → 2026-07-21

Ain Larbi fire, July 2026 عين العربي · Ain Larbi

Out · last measured on 21 Jul 2026

The fire started on 21 July 2026 in Ain Larbi, Algeria, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 133 hectares from satellite imagery, spread across a single municipality.

It is the 35th largest in Guelma since 2016 (of 40 with a page). Number 176 in Algeria in 2026, of 197.

Compare with…

Suggestions: Ain Larbi · 2020 Bordj Sabat · 2026 Heliopolis · 2026 Djebala Khemissi · 2026

We have the Copernicus perimeter for this fire, but not yet its hotspots: NASA publishes the yearly hotspot archive only once the year closes. The page picks it up automatically when it is available.

Burnt area: 133ha; Copernicus perimeter
Duration: 1day; 21 Jul 2026 – 21 Jul 2026
Municipalities hit: 1; communes
Started on: 21 Jul; 2026
Danger at start: 62; Extreme · FWI index

The weather it burned in

41°high

24km/h · peak gust

7%lowest humidity

It had gone 9 days without rain (1 mm or more) when it started.

This area had burned before

6% of the perimeter overlaps earlier fires recorded since 2016: 8 ha in 2020.

8 ha Ain Larbi fire, June 2020 394 ha in total; the hectares shown are those it shares with this fire

What happened to each town

Ain Larbi عين العربي 7,604 inhabitants · 7.2 km from the centre where it started

134 ha

0.8 %

Burnt area inside each municipality, from crossing the official 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.

What burned

Other natural land76 %
Mixed forest16 %
Agricultural areas7.7 %

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)
21 Jul	41.2 °C	7 %	24 km/h	0.0 mm	Extreme 62
22 Jul after	40.8 °C	8 %	40 km/h	0.0 mm	Very extreme 92
23 Jul after	41.0 °C	7 %	34 km/h	0.0 mm	Very extreme 83
24 Jul after	38.2 °C	14 %	26 km/h	0.0 mm	Extreme 66
25 Jul after	40.2 °C	10 %	33 km/h	0.1 mm	Very extreme 79
26 Jul after	37.2 °C	15 %	33 km/h	0.1 mm	Very extreme 77
27 Jul after	27.8 °C	43 %	48 km/h	0.5 mm	Very high 39
28 Jul after	29.1 °C	39 %	39 km/h	0.0 mm	High 33
29 Jul after	32.5 °C	22 %	39 km/h	0.0 mm	Very high 40
30 Jul after	32.8 °C	25 %	42 km/h	0.0 mm	Very high 43
31 Jul after	33.1 °C	34 %	42 km/h	0.0 mm	Very high 41

Before and after, from space

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

↔

Before · 14 Jul 2026

After · 28 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 23 July 2026 the air beside the fire reached 76 µg/m³ of PM2.5. That day averaged 40: 2.7 times the WHO daily guideline (15).

PM2.5 peak76 µg/m³

Days over the guideline4 days

PM10124 µg/m³

Optical depth1.24

WHO 15

192021222324

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)

Other fires nearby

All fires in Algeria ›

Frequently asked questions

How long did the Ain Larbi fire last?: Copernicus dates it between 21 July 2026 and 21 July 2026: 1 day between the first and last image with fire.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 133 hectares (1.3 km²). Official national figures may differ.
Which municipalities burned?: The fire only entered Ain Larbi (134 ha, 0.8 %).
Did the fire reach a town?: The fire started in Ain Larbi and came within 7.2 km of its centre. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.
What was the weather like?: During the fire the temperature reached 41.2 °C, humidity dropped to 7 % and gusts hit 24 km/h. The fire danger index (FWI) reached 62, class Extreme.
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 · Emergency number and official warnings ›

Satellite cross-check

NASA FIRMS ↗
EFFIS · 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.

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.

How we know this

Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
Dates from the perimeter: the VIIRS detections inside it did not change them. No 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.

How we build fire pages: methodology ›

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