Ghaziabad becomes India's most polluted city| Top 25

Delhi and its adjoining areas such as Noida, Gurugram, Ghaziabad and Faridabad are again back to its annual encounter with the extreme air pollution post-Diwali.
At around 10 in the morning, the air quality index (AQI) was docking at 423, which falls in the hazardous category, said System of Air Quality and Weather Forecasting And Research (SAFAR).
If one looks closely, on the Diwali night (October 29), the PM 2.5 level spiked by nearly five times. The data pointed towards the violation of the Supreme Court's ruling that set a two- hour window for bursting crackers on the Hindu festival.
People residing in Delhi-NCR on Wednesday complained of breathlessness, eye irritation and suffocation due to thick blanket of smog in the air.