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Nova Maringá fire, 4 August 2025 Nova Maringá, São José do Rio Claro

Out · last detection 3 Sept 2025, 17:48 UTC

The fire started on 4 August 2025 in Nova Maringá, Brazil, and satellites saw it burning for 31 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 13,094 hectares from heat detections, spread across 2 municipalities.

It is the 329th largest in Mato Grosso since 2016 (of 1996 with a page). Number 81 in Brazil in 2025, of 714.

Burnt area
13,094ha
GWIS perimeter (Copernicus)
Duration
31days
4 Aug 2025 – 3 Sept 2025
Municipalities hit
2
municipalities
Started on
4 Aug
2025
Heat detections
995
in a single hotspot: 382 MW
Danger at start
34
High · FWI index
Energy released
16.9GW
sum of detected power

Where it burned

3 Sept 2025
HOTSPOTS BY DAY 4 Aug3 Sept

How it evolved, day by day

4567891011121314151617181920212223242526272829303113

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

The weather it burned in

38°high
45km/h · peak gust
15%lowest humidity

It had gone 40 days without rain (1 mm or more) when it started. Rain came after the fire: 3.9 mm on 16 Sept.

This area had burned before

97% of the perimeter overlaps earlier fires recorded since 2016: 9,287 ha in 2020, 4,915 ha in 2022, 10,579 ha in 2023, 15,000 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 12,766 ha that had burned before.

What happened to each town

  1. Nova Maringá 5,846 inhabitants where it started
    13,148 ha reached on 4 Aug
    1.1 %
  2. São José do Rio Claro 14,911 inhabitants
    39 ha
    0.0 %

Burnt area inside each municipality, from crossing the GWIS 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.

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)
4 Aug 32.8 °C 33 % 28 km/h 0.0 mm High 34
5 Aug 30.3 °C 41 % 35 km/h 0.0 mm High 32
6 Aug 31.9 °C 38 % 30 km/h 0.0 mm High 31
7 Aug 34.9 °C 22 % 21 km/h 0.0 mm High 37
8 Aug 33.2 °C 31 % 35 km/h 0.0 mm Very high 42
9 Aug 27.7 °C 36 % 45 km/h 0.0 mm Very high 39
10 Aug 30.8 °C 29 % 29 km/h 0.0 mm High 33
11 Aug 32.4 °C 27 % 27 km/h 0.0 mm High 35
12 Aug 32.9 °C 24 % 24 km/h 0.0 mm High 36
13 Aug 33.5 °C 20 % 23 km/h 0.0 mm Very high 39
14 Aug 34.6 °C 17 % 28 km/h 0.0 mm Very high 44
15 Aug 35.1 °C 18 % 29 km/h 0.0 mm Very high 43
16 Aug 36.4 °C 23 % 27 km/h 0.0 mm Very high 43
17 Aug 36.7 °C 24 % 27 km/h 0.0 mm Very high 40
18 Aug 35.9 °C 23 % 27 km/h 0.0 mm Very high 43
19 Aug 35.0 °C 29 % 25 km/h 0.0 mm Very high 39
20 Aug 35.0 °C 35 % 28 km/h 0.0 mm High 34
21 Aug 35.6 °C 27 % 33 km/h 0.0 mm High 38
22 Aug 36.2 °C 15 % 36 km/h 0.0 mm Very high 48
23 Aug 37.0 °C 20 % 27 km/h 0.0 mm Very high 42
24 Aug 31.4 °C 35 % 37 km/h 0.0 mm Very high 40
25 Aug 31.1 °C 32 % 38 km/h 0.0 mm Very high 40
26 Aug 32.9 °C 29 % 38 km/h 0.0 mm Very high 40
27 Aug 35.8 °C 21 % 32 km/h 0.0 mm Very high 42
28 Aug 36.9 °C 22 % 25 km/h 0.0 mm Very high 40
29 Aug 37.2 °C 19 % 27 km/h 0.0 mm Very high 43
30 Aug 36.8 °C 22 % 32 km/h 0.0 mm Very high 42
31 Aug 36.0 °C 28 % 30 km/h 0.0 mm Very high 40
1 Sept 35.9 °C 27 % 26 km/h 0.0 mm Very high 38
2 Sept 38.3 °C 20 % 35 km/h 0.0 mm Very high 45
3 Sept 37.3 °C 22 % 33 km/h 0.0 mm Very high 42
4 Sept after 37.2 °C 22 % 30 km/h 0.0 mm Very high 42
5 Sept after 36.4 °C 24 % 35 km/h 0.0 mm Very high 48
6 Sept after 34.0 °C 29 % 34 km/h 0.0 mm Very high 44
7 Sept after 36.7 °C 22 % 30 km/h 0.0 mm Very high 41
8 Sept after 37.9 °C 24 % 28 km/h 0.0 mm Very high 40
9 Sept after 36.0 °C 33 % 19 km/h 0.0 mm High 36
10 Sept after 37.6 °C 25 % 29 km/h 0.0 mm Very high 38
11 Sept after 38.4 °C 20 % 30 km/h 0.0 mm Very high 41
12 Sept after 39.2 °C 20 % 28 km/h 0.0 mm Very high 42
13 Sept after 38.2 °C 21 % 25 km/h 0.0 mm Very high 45
14 Sept after 36.3 °C 36 % 28 km/h 0.2 mm High 37
15 Sept after 34.8 °C 37 % 24 km/h 0.2 mm High 33
16 Sept after 35.5 °C 39 % 23 km/h 3.9 mm Moderate 13

Before and after, from space

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

Before · 28 Jul 2025
After · 10 Sept 2025

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 6 August 2025 the air beside the fire reached 43 µg/m³ of PM2.5. That day averaged 22: 1.5 times the WHO daily guideline (15).

PM2.5 peak43 µg/m³
Days over the guideline10 days
PM1044 µg/m³
Optical depth0.54
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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 · 995Every 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 Brazil ›

Frequently asked questions

How long did the Nova Maringá fire last?
GWIS (Copernicus) dates it between 4 August 2025 and 3 September 2025: 31 days between the first and last heat detection of the perimeter.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 13,094 hectares (130.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Nova Maringá (13,148 ha, 1.1 %); São José do Rio Claro (39 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 38.3 °C, humidity dropped to 15 % and gusts hit 45 km/h. The fire danger index (FWI) reached 48, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193

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 193.

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 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). 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.