How long did the Bilmak fire last?

Copernicus dates it between 19 August 2025 and 22 August 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 642 hectares (6.4 km²). Official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Bilmak (637 ha, 0.4 %); Polohy (6 ha, 0.0 %).

Did the fire reach a town?

The closest fire to a town centre came within 18.2 km of Bilmak. 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 31.5 °C, humidity dropped to 22 % and gusts hit 44 km/h. The fire danger index (FWI) reached 42, class Very high.

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.

UA · Ukraine · 2025-08-19 → 2025-08-22

Bilmak fire, 19 August 2025 Більмацький район · Bilmak, Polohy

Out · last detection 22 Aug 2025, 10:03 UTC

The fire started on 19 August 2025 in Bilmak, Ukraine, and satellites saw it burning for 4 days. Copernicus mapped a burnt perimeter of 642 hectares from satellite imagery, spread across 2 municipalities.

It is the 23th largest in Zaporizhzhia Oblast since 2016 (of 490 with a page). Number 112 in Ukraine in 2025, of 1359.

The power measured by the satellite is low (9.2 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area: 642ha; Copernicus perimeter
Duration: 4days; 19 Aug 2025 – 22 Aug 2025
Municipalities hit: 2; districts
Started on: 19 Aug; 2025
Heat detections: 8; in a single hotspot: 9 MW
Danger at start: 30; High · FWI index
Energy released: 29MW; sum of detected power

Play back 22 Aug 2025

HOTSPOTS BY DAY 19 Aug22 Aug

How it evolved, day by day

2122

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

32°high

44km/h · peak gust

22%lowest humidity

It had gone 13 days without rain (1 mm or more) when it started. Rain came after the fire: 1.8 mm on 25 Aug.

This area had burned before

12% of the perimeter overlaps earlier fires recorded since 2016: 78 ha in 2024.

78 ha Bilmak fire, July 2024 505 ha in total; the hectares shown are those it shares with this fire

What happened to each town

Bilmak Більмацький район 21,359 inhabitants · 18.2 km from the town where it started

637 ha reached on 17 Aug

0.4 %
Polohy Пологівський район 39,115 inhabitants · 20.9 km from the town

6 ha reached on 21 Aug

0.0 %

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

Agricultural areas85 %
Other natural land15 %

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 Aug	31.5 °C	24 %	26 km/h	0.0 mm	High 30
18 Aug	31.5 °C	22 %	44 km/h	0.4 mm	Very high 42
19 Aug	25.9 °C	28 %	29 km/h	0.0 mm	High 32
20 Aug	29.3 °C	25 %	23 km/h	0.0 mm	High 31
21 Aug	30.2 °C	22 %	28 km/h	0.0 mm	High 33
22 Aug	31.2 °C	28 %	40 km/h	0.0 mm	Very high 40
23 Aug after	26.7 °C	46 %	43 km/h	0.8 mm	High 25
24 Aug after	23.4 °C	34 %	35 km/h	0.1 mm	High 27
25 Aug after	22.0 °C	32 %	46 km/h	1.8 mm	Moderate 18

Before and after, from space

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

↔

Before · 12 Aug 2025

After · 29 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 21 August 2025 the air beside the fire reached 15 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak15 µg/m³

Days over the guideline0 days

PM1017 µg/m³

Optical depth0.43

WHO 15

171819202122232425

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 · 8Every 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 Ukraine ›

Frequently asked questions

How long did the Bilmak fire last?: Copernicus dates it between 19 August 2025 and 22 August 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 642 hectares (6.4 km²). Official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Bilmak (637 ha, 0.4 %); Polohy (6 ha, 0.0 %).
Did the fire reach a town?: The closest fire to a town centre came within 18.2 km of Bilmak. 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 31.5 °C, humidity dropped to 22 % and gusts hit 44 km/h. The fire danger index (FWI) reached 42, class Very high.
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

ДСНС · State Emergency Service ↗

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?

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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.

Where it burned