RIO DE JANEIRO — A RED HEAT ALERT THROUGH WEDNESDAY EVENING

On the board · September 29, 2026 →

ACTIVE · September 29, 2026 · NO. 0929

THE DOME

A red extreme-heat alert covers Rio de Janeiro and its metro area until 6 PM Wednesday, with the hottest cores above 40 °C in the Centre-West and South-East. Humidity below 20 percent raises fire risk around Brasília.

THE RECORD

2 turning points on record since Sep 28.

Sep 29↑ moved up the board

Sep 28appeared, active

WHO IT TOUCHES

Health systemsFlood-affected communities in Thailand, Chile and India, and extreme heat in Rio de Janeiro.

WHAT THEY'RE SAYING

searched 34 vetted voices and the open field — nothing said about this system cleared the screen.

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