The Aporia · Kuala Lumpur is world’s most polluted city due to haze, Singapore third, index shows

Swiss monitor IQAir reports that Kuala Lumpur is the world’s most polluted major city with an Air Quality Index (AQI) of 166, followed by Singapore at 155. Both cities' air quality is categorized as unhealthy due to haze caused by smoke from fires on Borneo and Sumatra islands. Readings above 150 are considered unhealthy, while levels exceeding 300 are deemed hazardous.

Written locally by qwen2.5:14b on 2026-09-30, using this article's own text rather than the other coverage of the same event (that is the story summary below).

Story summary

Swiss monitor IQAir reported that Kuala Lumpur was the world’s most polluted major city on an early Wednesday, with an Air Quality Index (AQI) reading of 166, followed by Singapore at 155. These readings place both cities in the unhealthy category according to AQI standards. The haze enveloping these cities for over a month is due to smoke drifting from fires on Borneo and Sumatra islands. Readings above 150 are considered unhealthy, while levels surpassing 300 would be deemed hazardous.

Written for “Southeast Asia Haze Pollution” on 2026-10-05, grounded in this article and the 0 other(s) covering the same event.

📰 Southeast Asia Haze Pollution

Environment · 1 article(s) covering the same event.

Article leaning vs. publisher reliability

Source leaning vs. consistency

This article reads unscored and hedges 40% of its claims. Each row says how that neighbour differs.

One third of world population exposed to harmful air pollution: Monitor different event · 90%

The Straits Times

⚖️ Leans left 🔴 5% hedged 1 of 22 📰 publisher trust 59

“While both articles discuss air pollution in relation to wildfires and heatwaves, they describe different aspects: one covers the global impact of ozone pollution for a third of the world's population, while the other focuses specifically on the air quality index readings in Kuala Lumpur and Singapore.”

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IQAir Kuala Lumpur Singapore Swiss

Kuala Lumpur GPE · 3× Singapore GPE · 3× IQAir ORG · 2× Swiss NORP · 2×

The AQI converts measurements of pollutants into a single figure indicating air quality and potential health risks.

framing: mixed · carried by 1 article(s) · first seen 2026-09-30

2026-09-30 · South China Morning Post

Kuala Lumpur is world’s most polluted city due to haze, Singapore third, index shows · mixed framing

Kuala Lumpur is world’s most polluted city due to haze, Singapore third, index shows The readings for Kuala Lumpur at 166 and Singapore at 155 put both cities’ air quality as unhealthy, according to Swiss monitor IQAir A milky haze has shrouded the cities for more than a month as smoke drifted from fires on Borneo and Sumatra islands. uncertain

smoke → show → islands

Kuala Lumpur was the world’s most polluted major city early on Wednesday, according to Swiss monitor IQAir, with an Air Quality Index (AQI) reading of 166. uncertain

Lumpur → accord → 166

Singapore ranked third at 155. asserted

Singapore → rank → 155

The AQI converts measurements of pollutants into a single figure indicating air quality and potential health risks. asserted

AQI → convert → quality

Readings above 150 are classified as unhealthy, while levels above 300 are considered hazardous. asserted

levels → classify → 300

Kuala Lumpur is world’s most polluted city due to haze, Singapore third, index shows

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