Delhi was ranked the sixth most polluted city in India in October, trailing behind five other National Capital Region (NCR) cities, including Dharuhera, Ghaziabad, and Noida, according to a study by the Centre for Research on Energy and Clean Air (CREA) released on Tuesday.

The Monthly Air Quality Snapshot found Dharuhera in Haryana to be the most polluted city in October, with a monthly average PM2.5 concentration of 123 µg/m³, breaching the National Ambient Air Quality Standard (NAAQS) on 77 per cent of the days. The town recorded two 'Severe' and nine 'Very Poor' air quality days. Advertisement

Delhi's monthly PM2.5 concentration stood at 107 µg/m³, nearly three times higher than its September average of 36 µg/m³. Despite stubble burning contributing less than 6 per cent of Delhi’s P

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