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Rivne fire, 1 May 2026 Рівненський район · Rivne, Kostopil, Hoshcha

Out · last measured on 1 May 2026

The fire started on 1 May 2026 in Rivne, Ukraine, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 354 hectares from satellite imagery, spread across 3 municipalities.

It is the 54th largest in Rivne Oblast since 2016 (of 167 with a page). Number 224 in Ukraine in 2026, of 984.

Burnt area
354ha
Copernicus perimeter
Duration
1day
1 May 2026 – 1 May 2026
Municipalities hit
3
districts
Started on
1 May
2026
Heat detections
1
in a single hotspot: 11 MW
Danger at start
7
Low · FWI index

Where it burned

HOTSPOTS BY DAY 1 May1 May

The weather it burned in

12°high
36km/h · peak gust
51%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 10.5 mm on 8 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. Rivne Рівненський район 89,776 inhabitants · 48.8 km from the town where it started
    353 ha reached on 3 May
    0.2 %
  2. Kostopil Костопільський район 64,351 inhabitants · 36.2 km from the town
    2 ha
    0.0 %
  3. Hoshcha
    0 ha
    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

  • Other natural land88 %
  • Mixed forest9.4 %
  • Agricultural areas2.3 %

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)
1 May 11.5 °C 51 % 36 km/h 0.3 mm Low 7
2 May after 16.3 °C 43 % 24 km/h 0.0 mm Low 8
3 May after 25.1 °C 23 % 35 km/h 0.0 mm Moderate 17
4 May after 26.6 °C 21 % 31 km/h 0.0 mm Moderate 18
5 May after 27.8 °C 18 % 30 km/h 0.0 mm Moderate 21
6 May after 29.3 °C 14 % 41 km/h 0.0 mm High 29
7 May after 27.9 °C 27 % 41 km/h 0.5 mm High 27
8 May after 17.0 °C 73 % 30 km/h 10.5 mm Very low 0

Before and after, from space

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

Before · 24 Apr 2026
After · 8 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 2 May 2026 the air beside the fire reached 9 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak9 µg/m³
Days over the guideline0 days
PM1010 µg/m³
Optical depth0.40
29301234
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 · 1Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Ukraine ›

Frequently asked questions

How long did the Rivne fire last?
Copernicus dates it between 1 May 2026 and 1 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 354 hectares (3.5 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Rivne (353 ha, 0.2 %); Kostopil (2 ha, 0.0 %); Hoshcha (0 ha, 0.0 %).
Did the fire reach a town?
The closest fire to a town centre came within 36.2 km of Kostopil. 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 11.5 °C, humidity dropped to 51 % and gusts hit 36 km/h. The fire danger index (FWI) reached 7, 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.