Manaus weather alert: On 11/05/2026, the Negro River in Manaus dropped to 16.33 m (falling 15 cm in recent days), causing drought impacts and navigation difficulties for riverside communities. Additionally, on the morning of 11/14/2026, 24-hour PM2.5 concentrations reached over 50 to 125 µg/m³, categorizing air quality as Poor to Very Poor, which poses health risks for the general public and more serious effects for sensitive groups.