
AI-generated summary
Oeiras recorded 18% humidity on Friday, the second lowest rate in Brazil.
The notice is valid until 10pm this Saturday and can be renewed on Sunday (27). During this period, Inmet recommends drinking plenty of fluids and avoiding physical exhaustion and exposure to the sun during the driest and hottest hours of the day.
Furthermore, associated with high temperatures, dry weather also increases fires and forest fires, so you need to be careful. More information can be obtained from the Civil Defense, on 199, and the Fire Department, on 193.
On Friday (25), Oeiras reached 18% air humidity, the second lowest index in the country, behind only Pão de Açúcar (AL).
AI outlook — possibilities, not facts
Possible renewal of the low humidity alert on Sunday (27).
Possible · Within days

Storm in Rio Branco, Acre, recorded almost 80mm of rain in two hours, hitting 14 neighborhoods. The event caused flooding, fallen trees and damage to stallholders, mobilizing Civil Defense and the Fire Department in 17 incidents.

The northwest region of São Paulo, including São José do Rio Preto and Araçatuba, is on alert due to the first heat wave of spring. Temperatures could reach 40°C by Tuesday (29), with a high risk of fires and low air humidity.

The National Institute of Meteorology (Inmet) renewed the yellow alert for low air humidity for 122 municipalities in Paraíba. The warning, which indicates humidity between 20% and 30%, remains in force until 10pm this Saturday (26).

Cities in Sergipe, especially in Sertão, recorded temperatures of up to 40 °C in 2026. According to Semac, the intense heat is expected to persist in spring with forecasts of above average temperatures and little rain.

The Arroio São Luiz Dam, in São Marcos (RS), reached a safety level after reducing the water volume and monitoring. The risk of rupture was ruled out by Corsan, allowing repairs to begin, although preventive evacuation and monitoring persist.

The National Institute of Meteorology (Inmet) issued a red heat wave alert for the state of São Paulo and the Alto Tietê region. The phenomenon, classified as highly dangerous, is expected to raise temperatures significantly until next Wednesday.