How long did the Chuhuiv fire last?

Copernicus dates it between 16 July 2025 and 16 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 244 hectares (2.4 km²). Official national figures may differ.

Which municipalities burned?

The fire only entered Chuhuiv (243 ha, 0.2 %).

Did the fire reach a town?

The fire started in Chuhuiv and came within 2.7 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 31.2 °C, humidity dropped to 30 % and gusts hit 28 km/h. The fire danger index (FWI) reached 22, class 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 · 2025-07-16 → 2025-07-16

Chuhuiv fire, July 2025 Чугуївський район · Chuhuiv

Out · last detection 16 Jul 2025, 09:58 UTC

The fire started on 16 July 2025 in Chuhuiv, Ukraine, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 244 hectares from satellite imagery, spread across a single municipality.

It is the 153th largest in Kharkiv Oblast since 2016 (of 558 with a page). Number 509 in Ukraine in 2025, of 1359.

The power measured by the satellite is low (6.8 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Compare with…

Suggestions: Chuhuiv · 2022 Chuhuiv · 2024 Chuhuiv · 2026 Zmiiv · 2024

Burnt area: 244ha; Copernicus perimeter
Duration: 1day; 16 Jul 2025 – 16 Jul 2025
Municipalities hit: 1; districts
Started on: 16 Jul; 2025
Heat detections: 4; in a single hotspot: 7 MW
Danger at start: 22; High · FWI index
Average daily power: 27MW; detected power per day, on average

HOTSPOTS BY DAY 16 Jul16 Jul

How it evolved, day by day

16 Jul 2025 · 27 MW · 4

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

The weather it burned in

31°high

28km/h · peak gust

30%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 17 Jul.

This area had burned before

27% of the perimeter overlaps earlier fires recorded since 2016: 43 ha in 2022, 39 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 65 ha that had burned before.

What happened to each town

Chuhuiv Чугуївський район 2.7 km from the centre where it started

243 ha reached on 16 Jul

0.2 %

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

Agricultural areas89 %
Other natural land11 %

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)
16 Jul	31.2 °C	30 %	28 km/h	0.0 mm	High 22
17 Jul after	29.9 °C	36 %	35 km/h	1.7 mm	Moderate 14

Before and after, from space

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

↔

Before · 9 Jul 2025

After · 23 Jul 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 18 July 2025 the air beside the fire reached 14 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak14 µg/m³

Days over the guideline0 days

PM1015 µg/m³

Optical depth0.59

141516171819

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 · 4Every 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 Chuhuiv fire last?: Copernicus dates it between 16 July 2025 and 16 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 244 hectares (2.4 km²). Official national figures may differ.
Which municipalities burned?: The fire only entered Chuhuiv (243 ha, 0.2 %).
Did the fire reach a town?: The fire started in Chuhuiv and came within 2.7 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 31.2 °C, humidity dropped to 30 % and gusts hit 28 km/h. The fire danger index (FWI) reached 22, class 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 · Emergency number and official warnings ›

ДСНС · State Emergency Service ↗

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.

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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 101 · 112.

How we know this

Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
Dates from the perimeter: the VIIRS detections inside it did not change them. 4 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 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