Lahore has dropped from first to second place in the latest Air Quality Index (AQI) by IQ Air, but its air quality remains unhealthy. The city posted a score of 297, placing it behind Delhi, which leads the chart with 303.
Karachi ranks ninth with a score of 138, signaling better conditions than Lahore but still posing risks for sensitive groups.
Here are the 10 cities with the worst air quality in the world:
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