How long did the Concordia fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 7 May 2025 to 4 June 2025 (29 days). The perimeter dates it from 11 May 2025 to 29 May 2025.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 14,538 hectares (145.4 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Concordia (13,888 ha, 6.4 %); San Dimas (724 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 31.3 °C, humidity dropped to 21 % and gusts hit 50 km/h. The fire danger index (FWI) reached 37, class High.

Where does this data come from?

From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mexico (geoBoundaries). It is not an official report.

MX · Mexico · 2025-05-07 → 2025-06-04

Concordia fire, May 2025 Concordia, San Dimas

Out · last detection 3 Jun 2025, 08:52 UTC

The fire started on 7 May 2025 in Concordia, Mexico, and satellites saw it burning for 29 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 14,538 hectares from heat detections, spread across 2 municipalities.

It is the 3th largest in Sinaloa since 2016 (of 82 with a page). Number 5 in Mexico in 2025, of 166.

Compare with…

Suggestions: Concordia · 2023 Concordia · 2024 Mazatlán · 2025 Pueblo Nuevo · 2019

Burnt area: 14,538ha; GWIS perimeter (Copernicus)
Duration: 29days; 7 May 2025 – 4 Jun 2025
Municipalities hit: 2; municipalities
Started on: 7 May; 2025
Heat detections: 1,498; in a single hotspot: 218 MW
Danger at start: 33; High · FWI index
Average daily power: 536MW; detected power per day, on average

HOTSPOTS BY DAY 7 May4 Jun

Play back 3 Jun 2025

How it evolved, day by day

7 May 12 May 16 May 20 May 21 May 24 May 28 May 3 Jun

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

50km/h · peak gust

21%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.5 mm on 5 Jun.

This area had burned before

6% of the perimeter overlaps earlier fires recorded since 2016: 865 ha in 2023.

865 ha Concordia fire, May 2023 1,883 ha in total; the hectares shown are those it shares with this fire

How big is it?

It burned the equivalent of 9.2% of the area of London (145 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

Concordia where it started

13,888 ha reached on 7 May

6.4 %
San Dimas

724 ha reached on 7 May

0.1 %

Burnt area inside each municipality, from crossing the GWIS 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.

People and buildings inside the perimeter

GHSL 2025

Built-up area3.0 ha

Residents≈ 300

Inside the perimeter there were about 3.0 hectares of built-up land and about 300 residents (GHSL 2025, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

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)
7 May	27.4 °C	22 %	47 km/h	0.0 mm	High 33
8 May	28.7 °C	23 %	45 km/h	0.0 mm	High 33
9 May	29.2 °C	30 %	43 km/h	0.2 mm	High 34
10 May	28.8 °C	28 %	41 km/h	0.4 mm	High 33
11 May	27.6 °C	28 %	45 km/h	0.5 mm	High 34
12 May	27.2 °C	30 %	44 km/h	0.0 mm	High 34
13 May	28.7 °C	27 %	46 km/h	0.0 mm	High 34
14 May	28.5 °C	24 %	47 km/h	0.0 mm	High 35
15 May	30.3 °C	22 %	46 km/h	0.0 mm	High 36
16 May	29.4 °C	32 %	47 km/h	0.0 mm	High 34
17 May	29.2 °C	42 %	44 km/h	0.1 mm	High 30
18 May	28.3 °C	39 %	45 km/h	0.0 mm	High 30
19 May	29.0 °C	29 %	50 km/h	0.0 mm	High 32
20 May	30.1 °C	23 %	49 km/h	0.0 mm	High 36
21 May	31.3 °C	21 %	46 km/h	0.0 mm	High 37
22 May	30.4 °C	31 %	42 km/h	0.0 mm	High 36
23 May	29.7 °C	29 %	47 km/h	0.0 mm	High 37
24 May	29.7 °C	31 %	47 km/h	0.0 mm	High 36
25 May	28.7 °C	37 %	42 km/h	0.1 mm	High 32
26 May	28.8 °C	35 %	46 km/h	0.0 mm	High 32
27 May	29.1 °C	34 %	49 km/h	0.0 mm	High 34
28 May	28.9 °C	36 %	44 km/h	0.0 mm	High 32
29 May	28.6 °C	34 %	42 km/h	0.2 mm	High 32
30 May	26.8 °C	44 %	31 km/h	1.5 mm	Moderate 13
31 May	26.4 °C	50 %	42 km/h	6.8 mm	Very low 4
1 Jun	26.9 °C	45 %	40 km/h	0.9 mm	Low 8
2 Jun	29.4 °C	39 %	46 km/h	0.0 mm	Moderate 20
3 Jun	29.4 °C	40 %	44 km/h	0.0 mm	High 22
4 Jun	29.6 °C	44 %	42 km/h	0.0 mm	High 22
5 Jun after	29.7 °C	47 %	40 km/h	1.5 mm	Moderate 11

Before and after, from space

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

↔

Before · 30 Apr 2025

After · 11 Jun 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 24 May 2025 the air beside the fire reached 142 µg/m³ of PM2.5. That day averaged 58: 3.9 times the WHO daily guideline (15).

PM2.5 peak142 µg/m³

Days over the guideline17 days

PM10143 µg/m³

Optical depth0.57

WHO 15

5678910111213141516171819202122232425262728293031123456

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 · 1,498Every 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 Mexico ›

Frequently asked questions

How long did the Concordia fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 7 May 2025 to 4 June 2025 (29 days). The perimeter dates it from 11 May 2025 to 29 May 2025.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 14,538 hectares (145.4 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Concordia (13,888 ha, 6.4 %); San Dimas (724 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 31.3 °C, humidity dropped to 21 % and gusts hit 50 km/h. The fire danger index (FWI) reached 37, class High.
Where does this data come from?: From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mexico (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: 911 · Emergency number and official warnings ›

CONAFOR · Comisión Nacional Forestal ↗
CENAPRED ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · 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 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 911.

How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
Dates adjusted with the VIIRS detections inside the perimeter, which said 11 May 2025 to 29 May 2025. 1,498 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.
Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

How we build fire pages: methodology ›

Where this data comes from

The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 (Creative Commons Attribution 4.0 (CC BY 4.0)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.

Where it burned