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Nova Nazaré fire, 28 July 2026 Nova Nazaré, Água Boa, Nova Xavantina

Out · last detection 4 Sept 2026, 16:54 UTC

The fire started on 28 July 2026 in Nova Nazaré, Brazil, and satellites saw it burning for 38 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 124,689 hectares from heat detections, spread across 4 municipalities.

This page is probably a fire complex, not a single fire. GWIS merges into one perimeter the fires that touch over weeks, which in large burning seasons can join dozens of separate fires. The total area is reliable; the origin and dates refer to the whole complex.

Other fire pages in the same area and on the same dates:

It is the 11th largest in Mato Grosso since 2016 (of 1996 with a page). Number 2 in Brazil in 2026, of 760.

Compare with…

Suggestions: Nova Nazaré · 2016Nova Nazaré · 2020Nova Nazaré · 2021Nova Nazaré · 2019

Burnt area
124,689ha
GWIS perimeter (Copernicus)
Duration
38days
28 Jul 2026 – 3 Sept 2026
Municipalities hit
4
municipalities
Started on
28 Jul
2026
Heat detections
3,084
in a single hotspot: 330 MW
Danger at start
35
High · FWI index
Average daily power
1.4GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 28 Jul3 Sept
4 Sept 2026

How it evolved, day by day

28 Jul 2026 · 18 MW · 4 29 Jul 2026 · 116 MW · 21 31 Jul 2026 · 300 MW · 30 1 Aug 2026 · 449 MW · 28 2 Aug 2026 · 17 MW · 3 4 Aug 2026 · 97 MW · 10 5 Aug 2026 · 251 MW · 17 6 Aug 2026 · 843 MW · 48 7 Aug 2026 · 53 MW · 5 8 Aug 2026 · 293 MW · 30 9 Aug 2026 · 628 MW · 36 10 Aug 2026 · 1,584 MW · 53 11 Aug 2026 · 5,515 MW · 204 12 Aug 2026 · 5,982 MW · 256 13 Aug 2026 · 3,222 MW · 170 14 Aug 2026 · 1,092 MW · 69 15 Aug 2026 · 6,492 MW · 292 16 Aug 2026 · 3,663 MW · 391 17 Aug 2026 · 3,160 MW · 175 18 Aug 2026 · 984 MW · 138 19 Aug 2026 · 2,038 MW · 105 20 Aug 2026 · 909 MW · 99 21 Aug 2026 · 1,384 MW · 104 22 Aug 2026 · 922 MW · 111 23 Aug 2026 · 1,121 MW · 127 24 Aug 2026 · 1,563 MW · 115 25 Aug 2026 · 1,383 MW · 86 26 Aug 2026 · 3,622 MW · 142 27 Aug 2026 · 1,321 MW · 84 28 Aug 2026 · 234 MW · 20 29 Aug 2026 · 1,052 MW · 46 30 Aug 2026 · 156 MW · 11 31 Aug 2026 · 162 MW · 14 1 Sept 2026 · 371 MW · 31 2 Sept 2026 · 5 MW · 2 3 Sept 2026 · 34 MW · 4 4 Sept 2026 · 25 MW · 3
28 Jul 5 Aug 11 Aug 15 Aug 17 Aug 23 Aug 29 Aug 4 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

39°high
46km/h · peak gust
13%lowest humidity

It had gone 45 days without rain (1 mm or more) when it started.

How big is it?

10 km
It burned the equivalent of 79% of the area of London (1,247 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

  1. Nova Nazaré where it started
    119,491 ha reached on 28 Jul
    29 %
  2. Água Boa 29,219 inhabitants
    5,397 ha reached on 6 Aug
    0.7 %
  3. Nova Xavantina 24,345 inhabitants
    654 ha reached on 25 Aug
    0.1 %
  4. Cocalinho 6,220 inhabitants
    17 ha
    0.0 %

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 area0.57 ha
Residents≈ 450

Inside the perimeter there were about 0.57 hectares of built-up land and about 450 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)
28 Jul 36.5 °C 24 % 22 km/h 0.0 mm High 35
29 Jul 35.7 °C 26 % 21 km/h 0.0 mm High 34
30 Jul 36.2 °C 28 % 19 km/h 0.0 mm High 36
31 Jul 36.6 °C 21 % 31 km/h 0.0 mm Very high 42
1 Aug 34.4 °C 23 % 36 km/h 0.0 mm Very high 43
2 Aug 34.5 °C 24 % 33 km/h 0.0 mm Very high 42
3 Aug 33.4 °C 26 % 31 km/h 0.0 mm Very high 41
4 Aug 34.8 °C 22 % 34 km/h 0.0 mm Very high 43
5 Aug 35.5 °C 21 % 27 km/h 0.0 mm Very high 40
6 Aug 35.8 °C 23 % 32 km/h 0.0 mm Very high 42
7 Aug 36.2 °C 26 % 26 km/h 0.0 mm Very high 40
8 Aug 36.6 °C 25 % 28 km/h 0.0 mm Very high 41
9 Aug 37.6 °C 23 % 18 km/h 0.0 mm Very high 39
10 Aug 39.4 °C 19 % 22 km/h 0.0 mm Very high 41
11 Aug 37.8 °C 19 % 46 km/h 0.0 mm Extreme 54
12 Aug 36.0 °C 18 % 42 km/h 0.0 mm Extreme 56
13 Aug 36.0 °C 21 % 35 km/h 0.0 mm Extreme 51
14 Aug 36.2 °C 21 % 29 km/h 0.0 mm Very high 45
15 Aug 37.0 °C 19 % 30 km/h 0.0 mm Very high 47
16 Aug 38.0 °C 17 % 33 km/h 0.0 mm Very high 49
17 Aug 36.3 °C 21 % 41 km/h 0.0 mm Extreme 54
18 Aug 35.7 °C 25 % 35 km/h 0.0 mm Very high 46
19 Aug 36.4 °C 23 % 31 km/h 0.0 mm Very high 46
20 Aug 37.1 °C 13 % 24 km/h 0.0 mm Very high 44
21 Aug 36.6 °C 24 % 28 km/h 0.0 mm Very high 45
22 Aug 37.1 °C 24 % 30 km/h 0.0 mm Very high 48
23 Aug 37.9 °C 18 % 29 km/h 0.0 mm Very high 47
24 Aug 37.6 °C 14 % 29 km/h 0.0 mm Very high 49
25 Aug 38.9 °C 17 % 21 km/h 0.0 mm Very high 44
26 Aug 38.5 °C 20 % 25 km/h 0.0 mm Very high 47
27 Aug 37.3 °C 26 % 22 km/h 0.0 mm Very high 45
28 Aug 37.7 °C 26 % 35 km/h 0.0 mm Very high 46
29 Aug 38.2 °C 24 % 23 km/h 0.0 mm Very high 41
30 Aug 39.1 °C 22 % 26 km/h 0.0 mm Very high 45
31 Aug 39.2 °C 23 % 33 km/h 0.0 mm Very high 50
1 Sept 37.5 °C 29 % 34 km/h 0.0 mm Very high 48
2 Sept 34.6 °C 40 % 25 km/h 0.0 mm High 34
3 Sept 37.9 °C 28 % 21 km/h 0.0 mm High 34
4 Sept after 37.7 °C 32 % 34 km/h 0.9 mm High 35
5 Sept after 35.8 °C 35 % 31 km/h 0.1 mm High 33
6 Sept after 34.6 °C 41 % 29 km/h 0.5 mm High 32
7 Sept after 33.8 °C 46 % 28 km/h 0.4 mm High 33
8 Sept after 34.2 °C 40 % 22 km/h 0.3 mm High 28
9 Sept after 34.0 °C 42 % 30 km/h 0.2 mm High 28
10 Sept after 36.7 °C 30 % 32 km/h 0.0 mm High 36
11 Sept after 38.4 °C 21 % 37 km/h 0.0 mm Very high 46
12 Sept after 38.8 °C 19 % 21 km/h 0.0 mm Very high 41
13 Sept after 38.7 °C 23 % 29 km/h 0.0 mm Very high 46

Before and after, from space

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

Before · 21 Jul 2026
After · 10 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 16 August 2026 the air beside the fire reached 214 µg/m³ of PM2.5. That day averaged 112: 7.5 times the WHO daily guideline (15).

PM2.5 peak214 µg/m³
Days over the guideline21 days
PM10215 µg/m³
Optical depth1.41
26272829303112345678910111213141516171819202122232425262728293031123456
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 · 3,084Every 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 Nazaré fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 28 July 2026 to 3 September 2026 (38 days). The perimeter dates it from 4 August 2026 to 3 September 2026.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 124,689 hectares (1,246.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 4 municipalities: Nova Nazaré (119,491 ha, 29 %); Água Boa (5,397 ha, 0.7 %); Nova Xavantina (654 ha, 0.1 %); Cocalinho (17 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 39.4 °C, humidity dropped to 13 % and gusts hit 46 km/h. The fire danger index (FWI) reached 56, class Extreme.
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 · 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

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.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 6 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 4 August 2026 to 3 September 2026. 3,084 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 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.