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Chios fire, June 2025 Δημοτική Ενότητα ΧΙΟΥ · Chios

Out · last detection 25 Jun 2025, 11:29 UTC

The fire started on 22 June 2025 in Chios, Greece, and satellites saw it burning for 4 days. Copernicus mapped a burnt perimeter of 6,349 hectares from satellite imagery, spread across a single municipality.

It is the 2th largest in North Aegean since 2016 (of 10 with a page). Number 2 in Greece in 2025, of 43.

Burnt area
6,349ha
Copernicus perimeter
Duration
4days
22 Jun 2025 – 25 Jun 2025
Municipalities hit
1
municipalities
Started on
22 Jun
2025
Heat detections
337
in a single hotspot: 169 MW
Danger at start
52
Extreme · FWI index
Energy released
7.4GW
sum of detected power

Where it burned

25 Jun 2025
HOTSPOTS BY DAY 22 Jun25 Jun

How it evolved, day by day

22232425

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
71km/h · peak gust
12%lowest humidity

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

This area had burned before

7% of the perimeter overlaps earlier fires recorded since 2016: 412 ha in 2016, 1 ha in 2021, 19 ha in 2024.

What happened to each town

  1. Chios Δημοτική Ενότητα ΧΙΟΥ 24,964 inhabitants where it started
    6,356 ha reached on 22 Jun
    7.5 %

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

  • Scrub and transitional woodland36 %
  • Other natural land35 %
  • Agricultural areas20 %
  • Sclerophyllous scrub7.5 %
  • Coniferous forest1.7 %

Natura 2000 protected area affected: 3 %

Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.

Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.

Checked against the press

Checked on 30 September 2026

We checked this page against 4 sources published once the fire was out. This is what they add:

Also known as
Φωτιά στη Χίο · Chios wildfire · incendio de Leptopoda / Lepto Poda
Declared under control (not yet extinguished): 25 June 2025

Sources

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)
22 Jun 25.3 °C 26 % 71 km/h 0.0 mm Extreme 52
23 Jun 28.5 °C 21 % 68 km/h 0.0 mm Extreme 65
24 Jun 31.3 °C 13 % 48 km/h 0.0 mm Extreme 53
25 Jun 34.5 °C 12 % 60 km/h 0.0 mm Very extreme 78
26 Jun after 35.6 °C 14 % 58 km/h 0.0 mm Very extreme 75
27 Jun after 35.9 °C 14 % 64 km/h 0.0 mm Very extreme 79
28 Jun after 32.0 °C 25 % 74 km/h 0.0 mm Very extreme 94
29 Jun after 26.8 °C 28 % 93 km/h 0.0 mm Very extreme 83
30 Jun after 28.7 °C 31 % 84 km/h 0.0 mm Extreme 64
1 Jul after 32.4 °C 23 % 63 km/h 0.0 mm Extreme 66
2 Jul after 29.2 °C 17 % 82 km/h 0.0 mm Very extreme 93
3 Jul after 29.2 °C 21 % 81 km/h 0.0 mm Very extreme 96
4 Jul after 30.5 °C 18 % 69 km/h 0.0 mm Very extreme 82
5 Jul after 32.8 °C 14 % 54 km/h 0.0 mm Extreme 53

Before and after, from space

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

Before · 15 Jun 2025
After · 2 Jul 2025

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 25 June 2025 the air beside the fire reached 36 µg/m³ of PM2.5. That day averaged 17: 1.1 times the WHO daily guideline (15).

PM2.5 peak36 µg/m³
Days over the guideline1 day
PM1044 µg/m³
Optical depth0.45
202122232425262728
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 · 337Every 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 Greece ›

Frequently asked questions

How long did the Chios fire last?
Copernicus dates it between 22 June 2025 and 25 June 2025: 4 days between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 6,349 hectares (63.5 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Chios (6,356 ha, 7.5 %).
What was the weather like?
During the fire the temperature reached 34.5 °C, humidity dropped to 12 % and gusts hit 71 km/h. The fire danger index (FWI) reached 78, class Very extreme.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Greece (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: 112 · 199

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
What do you think is wrong?

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 112 · 199.

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 (CC0 1.0 Universal (CC0 1.0) Public Domain Dedication). 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.