Manaus Shrouded by Toxic Smoke as Amazon Fires Persist

Overview

• Air quality in Manaus reached dangerously high levels on Saturday, October 17, with AQI readings up to 657 and PM2.5 measurements around 400 µg/m3, prompting health alerts and mask guidance from Fiocruz.
• The city has been covered by dense smoke for about ten consecutive days, forcing schools to move to remote lessons, triggering civil-defense cellphone alerts and leaving vulnerable people at acute risk of respiratory and cardiovascular problems.
• Satellite monitoring shows thousands of hotspots in the Amazon since September, with INPE reporting more than 22,000 fire detections and overflights finding active blazes inside preserved forest areas that led authorities to open probes into possible deliberate ignitions.
• The federal government deployed expanded assets including Air Tractor planes, KC-390 airlifter(s), helicopters, hundreds of brigadistas, R$14 million in emergency aid and plans for a decentralized health base to be installed on October 20 to treat smoke-related cases.
• Thick smoke has repeatedly reduced visibility and forced suspension of aerial suppression flights at Manaus airports, limiting firefighting effectiveness even as short-term rain forecasts could partially clear pollution while the total burned area and legal investigations will determine long-term impacts.