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Top 10 Cities With Best Air Quality Index In The World, All Below An AQI Of 20

As the world battles against poor air quality, a Swiss air quality technology company has categorized countries based on ...
Asian News International

Delhi-NCR Air Quality remains under "very poor" category, overall AQI at 292

The Central Pollution Control Board (CPCB), the overall Air Quality Index (AQI) in the national capital stood at 292 as of 8 ...