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Vasylivka fire, 26 July 2026 Василівський район · Ukraine

Out · last detection 21 Sept 2026, 00:39 UTC

Satellites first detected fire on 26 July 2026 in Vasylivka, Ukraine. It was active for 58 days, with 77 heat detections and an area with fire of about 210 hectares rebuilt from them, spread across a single municipality.

Compare with…

Suggestions: Zaporizhia · 2025Oleshky · 2026Mykhailivka · 2024Kamianka Dniprovska · 2024

Copernicus has not yet published the burnt perimeter, which takes a few days to measure on satellite imagery. For now the area is the one rebuilt from heat detections (about 14 hectares per pixel). When the perimeter arrives, this page picks it up on its own and keeps the same address.

Area with fire
≈ 210ha
rebuilt from hotspots, no official perimeter yet
Duration
58days
26 Jul 2026 – 21 Sept 2026
Municipalities hit
0
districts
Started on
26 Jul
2026
Heat detections
77
in a single hotspot: 141 MW
Danger at start
13
Moderate · FWI index
Average daily power
46MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 26 Jul21 Sept
21 Sept 2026

How it evolved, day by day

26 Jul 2026 · 14 MW · 3 1 Aug 2026 · 1 MW · 1 2 Aug 2026 · 5 MW · 1 3 Aug 2026 · 4 MW · 1 4 Aug 2026 · 6 MW · 2 5 Aug 2026 · 1 MW · 1 6 Aug 2026 · 16 MW · 6 7 Aug 2026 · 16 MW · 5 8 Aug 2026 · 19 MW · 3 10 Aug 2026 · 13 MW · 4 11 Aug 2026 · 580 MW · 10 14 Aug 2026 · 10 MW · 3 15 Aug 2026 · 1 MW · 1 21 Aug 2026 · 1 MW · 1 22 Aug 2026 · 13 MW · 2 24 Aug 2026 · 8 MW · 1 30 Aug 2026 · 8 MW · 1 4 Sept 2026 · 3 MW · 2 5 Sept 2026 · 335 MW · 8 7 Sept 2026 · 58 MW · 3 13 Sept 2026 · 5 MW · 1 18 Sept 2026 · 0 MW · 1 19 Sept 2026 · 20 MW · 8 20 Sept 2026 · 19 MW · 7 21 Sept 2026 · 3 MW · 4
26 Jul 5 Aug 11 Aug 24 Aug 13 Sept

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

The weather it burned in

37°high
51km/h · peak gust
16%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 34.9 mm on 23 Sept.

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)
26 Jul 27.8 °C 39 % 45 km/h 1.6 mm Moderate 13
27 Jul 30.4 °C 28 % 36 km/h 0.0 mm High 32
28 Jul 28.6 °C 26 % 47 km/h 3.4 mm Very high 44
29 Jul 24.5 °C 32 % 47 km/h 0.1 mm Moderate 17
30 Jul 26.9 °C 29 % 38 km/h 0.0 mm High 30
31 Jul 28.7 °C 30 % 36 km/h 0.0 mm High 33
1 Aug 30.8 °C 26 % 31 km/h 0.0 mm High 33
2 Aug 33.4 °C 24 % 30 km/h 0.0 mm High 36
3 Aug 33.8 °C 25 % 36 km/h 0.0 mm Very high 45
4 Aug 34.6 °C 25 % 38 km/h 0.0 mm Extreme 54
5 Aug 34.1 °C 29 % 32 km/h 0.0 mm Very high 43
6 Aug 36.6 °C 22 % 32 km/h 0.0 mm Very high 46
7 Aug 36.4 °C 21 % 51 km/h 0.0 mm Very extreme 71
8 Aug 34.9 °C 28 % 40 km/h 0.4 mm Very high 50
9 Aug 30.4 °C 46 % 46 km/h 0.1 mm Very high 47
10 Aug 31.7 °C 41 % 37 km/h 0.0 mm High 38
11 Aug 33.9 °C 35 % 18 km/h 0.4 mm High 27
12 Aug 28.9 °C 31 % 46 km/h 0.0 mm Extreme 51
13 Aug 24.5 °C 29 % 45 km/h 0.0 mm Very high 48
14 Aug 24.6 °C 28 % 38 km/h 0.0 mm Very high 44
15 Aug 25.6 °C 28 % 32 km/h 0.0 mm Very high 40
16 Aug 28.2 °C 26 % 23 km/h 0.0 mm High 35
17 Aug 30.5 °C 23 % 16 km/h 0.0 mm High 36
18 Aug 32.6 °C 21 % 38 km/h 0.0 mm Extreme 55
19 Aug 22.8 °C 57 % 30 km/h 1.2 mm Moderate 16
20 Aug 29.8 °C 30 % 24 km/h 0.0 mm High 32
21 Aug 31.7 °C 26 % 30 km/h 0.0 mm Very high 50
22 Aug 35.0 °C 16 % 37 km/h 0.0 mm Extreme 62
23 Aug 34.4 °C 21 % 42 km/h 0.0 mm Extreme 52
24 Aug 27.6 °C 28 % 39 km/h 0.0 mm Extreme 54
25 Aug 28.7 °C 23 % 22 km/h 0.0 mm Very high 38
26 Aug 28.4 °C 33 % 37 km/h 0.0 mm High 30
27 Aug 22.7 °C 56 % 31 km/h 2.3 mm Moderate 19
28 Aug 23.9 °C 49 % 51 km/h 0.8 mm High 27
29 Aug 30.6 °C 27 % 41 km/h 0.0 mm Extreme 51
30 Aug 29.6 °C 23 % 34 km/h 0.0 mm Very high 49
31 Aug 29.2 °C 17 % 32 km/h 0.0 mm Extreme 54
1 Sept 30.2 °C 18 % 26 km/h 0.0 mm Very high 45
2 Sept 30.6 °C 18 % 22 km/h 0.0 mm Very high 40
3 Sept 27.9 °C 30 % 30 km/h 0.1 mm Very high 47
4 Sept 28.8 °C 29 % 22 km/h 0.4 mm Very high 40
5 Sept 31.4 °C 28 % 48 km/h 0.0 mm Extreme 68
6 Sept 24.4 °C 34 % 49 km/h 4.7 mm Moderate 13
7 Sept 21.2 °C 41 % 48 km/h 0.4 mm High 32
8 Sept 23.1 °C 31 % 35 km/h 0.0 mm High 37
9 Sept 26.1 °C 27 % 20 km/h 0.0 mm High 31
10 Sept 28.9 °C 31 % 18 km/h 0.0 mm High 30
11 Sept 29.9 °C 21 % 24 km/h 0.0 mm Very high 42
12 Sept 32.3 °C 20 % 24 km/h 0.0 mm Very high 48
13 Sept 31.1 °C 22 % 30 km/h 0.0 mm High 37
14 Sept 23.8 °C 49 % 24 km/h 5.7 mm High 31
15 Sept 15.5 °C 74 % 43 km/h 1.3 mm Low 6
16 Sept 21.1 °C 47 % 38 km/h 0.0 mm Moderate 14
17 Sept 21.9 °C 40 % 28 km/h 0.0 mm Moderate 19
18 Sept 24.1 °C 31 % 20 km/h 0.0 mm High 24
19 Sept 27.1 °C 30 % 23 km/h 0.0 mm High 30
20 Sept 28.4 °C 29 % 16 km/h 0.0 mm High 27
21 Sept 27.1 °C 35 % 36 km/h 1.3 mm High 37
22 Sept after 19.2 °C 49 % 28 km/h 0.2 mm Moderate 16
23 Sept after 16.5 °C 77 % 62 km/h 34.9 mm Very low 0

Its twins: fires that started in the same weather

It started with an FWI of 13.1, a minimum humidity of 39% and rain the day before. Fires in the area that started in weather like this since 2022: 20.

FWI at the start 13.1
Minimum humidity 39 %
Days without rain 0
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Zaporizhia fire, August 2025
258 ha 1 day FWI 10.8 Min. humidity 40 % 52 km away, in 2025

First rain (1 mm or more) after it ended: none in the following ten days.

See its page Compare with this fire

What happened to them

1 day
median duration
250 ha
median area
0 %
went past 1,000 ha
2.5 mm
rain at the end (median; 15 of 20 had it)

It burned an area similar to its twins (210 ha against a median of 250 ha) and lasted 58 days, against 1 day.

In 5 of 20, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.

This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it

How it ended

34.9 mmfirst rain
23 Sept2 days after it ended
51km/h · max. gust

It was considered over on 21 Sept, and on 23 Sept 34.9 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 15 of 20, with a median of 2.5 mm.

Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

How a twin is chosen

  • Same area: fires that have already ended, less than 250 km from this one, since 2022.
  • Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
  • Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
  • Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
  • They are sorted by similarity, and the outlines of the first five are drawn.

How we calculate it

Before and after, from space

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

Before · 19 Jul 2026
After · 28 Sept 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 17 September 2026 the air beside the fire reached 34 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak34 µg/m³
Days over the guideline0 days
PM1043 µg/m³
Optical depth0.24
16171819
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 · 77Every 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 Vasylivka fire last?
According to the heat detections seen by satellite, it burned from 26 July 2026 to 21 September 2026 (58 days between the first and the last detection). There is no perimeter yet to date it.
How much area did it burn?
There is no official perimeter yet. Heat detections rebuild about 210 hectares with fire (2.1 km²); Copernicus will publish the measured figure within days.
What was the weather like?
During the fire the temperature reached 36.6 °C, humidity dropped to 16 % and gusts hit 51 km/h. The fire danger index (FWI) reached 71, class Very extreme.
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.
How did the fires that started in similar weather in this area end?
Fires less than 250 km away that started since 2022 with a similar FWI, humidity and dry spell: 20. Their median duration was 1 day and their median area 250 ha; 0 % went past 1,000 ha. In 5 of 20, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.

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

Satellite cross-check

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 With cross-checks and a citable version

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.

How we know this
  • No perimeter yet: the area (≈ 210 ha) is estimated by counting VIIRS pixels with fire, about 14 ha each.
  • Dates of the first and last VIIRS detection of the cluster. 77 Suomi-NPP VIIRS detections on those dates.
  • 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.