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Custonaci fire, 25 July 2025 Custonaci

Out · last measured on 25 Jul 2025

The fire started on 25 July 2025 in Custonaci, Italy, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 633 hectares from satellite imagery, spread across a single municipality.

It is the 14th largest in Trapani since 2016 (of 68 with a page). Number 15 in Italy in 2025, of 216.

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
633ha
Copernicus perimeter
Duration
1day
25 Jul 2025 – 25 Jul 2025
Municipalities hit
1
municipalities
Started on
25 Jul
2025
Danger at start
54
Extreme · FWI index
Natura 2000
67%
of the perimeter is protected land

Where it burned

The weather it burned in

40°high
50km/h · peak gust
18%lowest humidity

It had gone 20 days without rain (1 mm or more) when it started.

This area had burned before

16% of the perimeter overlaps earlier fires recorded since 2016: 26 ha in 2019, 58 ha in 2020, 45 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 104 ha that had burned before.

What happened to each town

  1. Custonaci 5,274 inhabitants · 1.4 km from the town where it started
    634 ha
    9.1 %

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

  • Sclerophyllous scrub88 %
  • Agricultural areas6.2 %
  • Artificial surfaces6.2 %

Natura 2000 protected area affected: 67 %

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.

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)
25 Jul 39.5 °C 18 % 50 km/h 0.0 mm Extreme 54
26 Jul after 32.0 °C 42 % 43 km/h 0.2 mm Very high 38
27 Jul after 29.3 °C 45 % 48 km/h 0.0 mm High 33
28 Jul after 28.2 °C 45 % 62 km/h 0.0 mm Very high 41
29 Jul after 27.1 °C 48 % 52 km/h 0.4 mm High 34
30 Jul after 27.8 °C 48 % 39 km/h 0.3 mm High 28
31 Jul after 28.1 °C 45 % 39 km/h 0.1 mm High 28
1 Aug after 30.5 °C 35 % 34 km/h 0.0 mm High 29
2 Aug after 30.2 °C 33 % 37 km/h 0.0 mm High 32
3 Aug after 30.2 °C 38 % 42 km/h 0.0 mm High 33
4 Aug after 28.0 °C 42 % 50 km/h 0.0 mm High 36

Before and after, from space

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

Before · 18 Jul 2025
After · 1 Aug 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 26 July 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
PM1029 µg/m³
Optical depth0.70
232425262728
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 Italy ›

Frequently asked questions

How long did the Custonaci fire last?
Copernicus dates it between 25 July 2025 and 25 July 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 633 hectares (6.3 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Custonaci (634 ha, 9.1 %).
Did the fire reach a town?
The closest fire to a town centre came within 1.4 km of Custonaci. 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 39.5 °C, humidity dropped to 18 % and gusts hit 50 km/h. The fire danger index (FWI) reached 54, class Extreme.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Italy (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 · 1515

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 · 1515.

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 ADM4 (Creative Commons Attribution 3.0 License). 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.