Delhi overtakes Lahore as world's most polluted city as air quality drops

1. What happened

   According to a headline from The Hindu, Delhi has overtaken Lahore as the world's most polluted city as air quality declines. Only the headline was available, so the full article's details could not be checked.

2. When it started

   The topic started trending around 13 November 2026, according to the trend data. The publication date of the source article is not provided.

3. How it spread

   The available information does not say which air quality index, monitoring network or ranking method was used to compare the cities.

4. Why it matters

   The headline attributes the change to a drop in air quality in Delhi. The article's specific readings, causes and official responses are not included in the material provided.