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Borzna fire, May 2026 Борзнянський район · Borzna

Out · last measured on 2 May 2026

The fire started on 2 May 2026 in Borzna, Ukraine, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 123 hectares from satellite imagery, spread across a single municipality.

It is the 132th largest in Chernihiv Oblast since 2016 (of 156 with a page). Number 772 in Ukraine in 2026, of 984.

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
123ha
Copernicus perimeter
Duration
1day
2 May 2026 – 2 May 2026
Municipalities hit
1
districts
Started on
2 May
2026
Danger at start
5
Very low · FWI index

Where it burned

The weather it burned in

15°high
20km/h · peak gust
29%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 7.3 mm on 10 May.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

  1. Borzna Борзнянський район 31,092 inhabitants · 8.1 km from the town where it started
    123 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

  • Agricultural areas49 %
  • Other natural land33 %
  • Mixed forest17 %
  • Broadleaved forest1.6 %

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)
2 May 15.2 °C 29 % 20 km/h 0.0 mm Very low 5
3 May after 21.2 °C 33 % 41 km/h 0.2 mm Low 10
4 May after 26.7 °C 24 % 24 km/h 0.0 mm Moderate 12
5 May after 28.2 °C 20 % 25 km/h 0.0 mm Moderate 16
6 May after 29.0 °C 22 % 26 km/h 0.0 mm Moderate 18
7 May after 28.4 °C 23 % 37 km/h 0.0 mm Moderate 20
8 May after 25.1 °C 28 % 39 km/h 0.0 mm Moderate 21
9 May after 19.8 °C 50 % 26 km/h 0.9 mm Low 8
10 May after 15.6 °C 80 % 17 km/h 7.3 mm Very low 0

Before and after, from space

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

Before · 25 Apr 2026
After · 9 May 2026

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 5 May 2026 the air beside the fire reached 8 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak8 µg/m³
Days over the guideline0 days
PM1010 µg/m³
Optical depth0.48
3012345
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 Borzna fire last?
Copernicus dates it between 2 May 2026 and 2 May 2026: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 123 hectares (1.2 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Borzna (123 ha, 0.1 %).
Did the fire reach a town?
The closest fire to a town centre came within 8.1 km of Borzna. 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 15.2 °C, humidity dropped to 29 % and gusts hit 20 km/h. The fire danger index (FWI) reached 5, class Very 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.