Ghaziabad registered a monthly average PM2.5 concentration of 224 micrograms per cubic metre in November.

While Delhi often grabs headlines for its poor air quality, a study of air quality levels in November has shown Ghaziabad in the National Capital Region to be the most polluted city in India.

Ghaziabad registered a monthly average PM2.5 concentration of 224 micrograms per cubic metre, exceeding national air quality standards on all 30 days of the month, a report by think tank Centre for Research on Energy and Clean Air said.

Other cities in the top 10 most polluted list included Noida, Bahadurgarh, Delhi, Hapur, Greater Noida, Baghpat, Sonipat, Meerut and Rohtak. Uttar Pradesh accounted for six of these cities, Haryana for three, and Delhi for one.

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