# Extreme heat and wildfire risks in Brazil

> Live situation record from CLSTR: https://clstr.news/situations/extreme-heat-and-wildfire-risks-in-brazil
> Updated: 2026-09-28T21:40:33.000Z. Sources: 5. Developments: 2.

Extreme heat conditions have intensified across the Brazilian states of Mato Grosso and Mato Grosso do Sul.

Initially, Mato Grosso experienced temperatures reaching up to 41°C in cities such as Colniza and Peixoto de Azevedo. The National Institute of Meteorology (Inmet) issued warnings regarding low air humidity and potential storms, noting that the heat and lack of rain required attention for water availability and agricultural management.

By late September, the situation escalated in the Pantanal region of Mato Grosso do Sul. Temperatures in Ladário and Corumbá reached 43°C, with heat indices as high as 51°C, prompting Inmet to place the state under a red alert. This heatwave has coincided with increased wildfire risks; Mato Grosso do Sul recorded 184,800 hectares burned between January and September, a nearly 4% increase over the previous year. In response, a state decree has suspended all controlled burns since August 1st, and local communities have been forced to alter daily routines to avoid peak afternoon heat.

## Claims

- A meteorological station in Ladário recorded temperatures of 43°C and a heat index of up to 51°C. (single source)
- The National Institute of Meteorology (Inmet) issued a red alert for a heatwave in Mato Grosso do Sul. (single source)
- Mato Grosso do Sul recorded 184,800 hectares burned between January and September, a nearly 4% increase from the same period in 2024. (single source)
- A state decree has suspended the use of controlled burns in Mato Grosso do Sul since August 1st. (single source)

## Timeline

### 2026-09-28: Pantanal heatwave triggers red alert and wildfire risks in Mato Grosso do Sul

Extreme heat in the Pantanal, with temperatures hitting 43°C and heat indices of 51°C, has triggered a red alert and increased wildfire risks in Mato Grosso do Sul.

2 sources. https://clstr.news/cluster/pantanal-heatwave-triggers-red-alert-and-wildfire-risks-in-mato-grosso-do-sul

### 2026-09-10: Mato Grosso faces extreme heat with temperatures reaching 41°C

Mato Grosso faces extreme heat, with temperatures in cities like Nova Xavantina and Colniza reaching between 40°C and 41°C. High temperatures and low humidity are expected to persist through the weekend.

3 sources. https://clstr.news/cluster/mato-grosso-faces-extreme-heat-with-temperatures-reaching-41c

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Cite as: Extreme heat and wildfire risks in Brazil. CLSTR, https://clstr.news/situations/extreme-heat-and-wildfire-risks-in-brazil