Daily brief · Brazil

São Luís Oct 21, 2026

Today's edition is in progress.

Weather-risk signals · signal engine (Open-Meteo)

A heavy rain day could hit

extreme

A single day could bring around 5.8mm of rain on 2026-10-24 — above the local heavy-rain reference for this time of year (around 1.3mm in a day). This comparison adds historical context; it does not assess impacts on a specific activity.

Reading evidence

Reading calculated Oct 21, 2026, 6:02 PM UTC.

Valid until Oct 26, 2026, 6:02 PM UTC.

Source: Open-Meteo.

Forecast period: 2026-10-21 to 2026-10-27.

Forecast source: open-meteo.

Years with usable data: 10 of 10.

Historical dataset: era5.

Samples: 150.

Method: heavy-rain-percentile-max-v1-2026-09-22.

outdoor events · drainage operators · agriculture · soy farmers · sugarcane growers · cotton growers

Heat is building above the usual range

high

Daily highs may average around 33.5°C over the next week — above the 31°C typical for this time of year. Outdoor work, livestock, and crops in flowering can come under stress.

Reading evidence

Reading calculated Oct 21, 2026, 6:02 PM UTC.

Valid until Oct 28, 2026, 12:01 AM UTC.

Source: Open-Meteo.

Forecast period: 2026-10-21 to 2026-10-27.

Forecast source: open-meteo.

Years with usable data: 10 of 10.

Historical dataset: era5.

Samples: 150.

Method: heat-stress-avg-v1-2026-09-22.

outdoor farmers · tourism · energy demand · soy farmers · sugarcane growers · cotton growers

What people were seeing · community field reports

No field observations were posted for this place on Oct 21, 2026.