Latin America·Brazil
Breaking
Smoke from record Amazon fires gave Manaus Brazil’s worst air for weeks
MANAUS —
Depth
Dig five layers into this story — from what happened to the full picture.
L1What happened
Manaus had Brazil’s worst air quality for the first two weeks of October, with fine particles peaking at 344.5 µg/m³ on Oct. 9 (state university’s Selva system, via O Globo). On Oct. 17 the IQAir index hit 657 (“hazardous”) and Amazonas Civil Defense issued a severe-risk alert (G1).
L2Who’s affected
Children, older people, pregnant women and people with heart or lung conditions are most at risk, says Fiocruz epidemiologist Jesem Orellana. City schools shut for two weeks and the state university (UEA) for one.
L3Why it’s quiet
The smoke built slowly from fires that grew from late August and eased with rain. Orellana warns people have “already normalized” the smoke. Analysis · OVERLOOKED Slow-burn environmental crises rarely lead U.S. news.
L4Deeper impact
Burned area in Amazonas in October reached 247,660 hectares against a historical average of 63,239 — 291% higher (O Globo). Brazil logged 29,758 fire hotspots in October, led by Pará.
L5Full context
The Environment Ministry believes El Niño delayed the fire season, which could stretch it into early next year. A federal task force used 16 aircraft and made at least 10 detentions of arson suspects. On Oct. 31 Manaus again woke to “bad” air (AM Post).
You’ve reached the bottom. Read the original reporting below.
Original reporting
This is an OVERLOOKED summary of the reporting above. Facts and figures come from the linked sources. Everything here is a fact unless it is labelled otherwise. Support this work.
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