Khaosod English(@KhaosodEnglish):Singapore becomes world’s most polluted city Singapore topped IQAir’s ranking of the world’s most polluted cities on 16 October, followed by Kuala Lumpur, Malaysia, in second place. . Air quality worsened across Singapore overnight, with 24-hour Pollutant Standards Index (PSI) readings reaching the “very unhealthy” category on Friday.

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Khaosod English@KhaosodEnglish

2026.10.16 06:46

Singapore becomes world’s most polluted city Singapore topped IQAir’s ranking of the world’s most polluted cities on 16 October, followed by Kuala Lumpur, Malaysia, in second place. . Air quality worsened across Singapore overnight, with 24-hour Pollutant Standards Index (PSI) readings reaching the “very unhealthy” category on Friday.