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Izium fire, April 2025 Ізюмський район · Izium

Out · last measured on 17 Apr 2025

The fire started on 17 April 2025 in Izium, Ukraine, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 156 hectares from satellite imagery, spread across a single municipality.

It is the 294th largest in Kharkiv Oblast since 2016 (of 558 with a page). Number 853 in Ukraine in 2025, of 1359.

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
156ha
Copernicus perimeter
Duration
1day
17 Apr 2025 – 17 Apr 2025
Municipalities hit
1
districts
Started on
17 Apr
2025
Danger at start
11
Low · FWI index

Where it burned

The weather it burned in

23°high
23km/h · peak gust
25%lowest humidity

It had gone 6 days without rain (1 mm or more) when it started. Rain came after the fire: 1.1 mm on 26 Apr.

This area had burned before

88% of the perimeter overlaps earlier fires recorded since 2016: 127 ha in 2022, 56 ha in 2023, 46 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 137 ha that had burned before.

What happened to each town

  1. Izium Ізюмський район 17,029 inhabitants · 5.2 km from the town where it started
    156 ha
    0.1 %

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

  • Mixed forest65 %
  • Other natural land31 %
  • Agricultural areas4.5 %

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)
17 Apr 22.9 °C 25 % 23 km/h 0.0 mm Low 11
18 Apr after 24.5 °C 23 % 28 km/h 0.0 mm Moderate 14
19 Apr after 24.6 °C 16 % 42 km/h 0.0 mm Moderate 21
20 Apr after 24.9 °C 15 % 46 km/h 0.0 mm High 24
21 Apr after 24.4 °C 16 % 44 km/h 0.0 mm High 24
22 Apr after 24.6 °C 25 % 35 km/h 0.0 mm Moderate 21
23 Apr after 26.9 °C 19 % 40 km/h 0.1 mm High 24
24 Apr after 26.2 °C 22 % 28 km/h 0.7 mm Moderate 18
25 Apr after 27.8 °C 10 % 25 km/h 0.1 mm High 24
26 Apr after 21.3 °C 37 % 59 km/h 1.1 mm Moderate 20

Before and after, from space

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

Before · 10 Apr 2025
After · 24 Apr 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 15 April 2025 the air beside the fire reached 19 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak19 µg/m³
Days over the guideline0 days
PM1022 µg/m³
Optical depth0.32
151617181920
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 Ukraine ›

Frequently asked questions

How long did the Izium fire last?
Copernicus dates it between 17 April 2025 and 17 April 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 156 hectares (1.6 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Izium (156 ha, 0.1 %).
Did the fire reach a town?
The closest fire to a town centre came within 5.2 km of Izium. 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 22.9 °C, humidity dropped to 25 % and gusts hit 23 km/h. The fire danger index (FWI) reached 11, class Low.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Ukraine (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: 101 · 112

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 101 · 112.

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 ADM2 (Public Domain). 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.