Whatever the causes of the smog, by one ranking Delhi was not just the most polluted city in the world, but “nearly five times as bad as the second most polluted city, Dhaka,” in Bangladesh next door, as Shashi Tharoor, a leader of the opposition in Parliament and best-selling author, posted on X.

Hundreds of millions of Indians breathe some of the world’s most toxic air all year round. Air pollution in the capital area that’s home to about 30 million people is especially stubborn. In winter, the cold weather actually makes the smog even worse — and potent.

India's capital city of Delhi has virtually shut down as air pollution hit "severe plus" levels, according to Indian government officials in its pollution control authority.

India's capital was left gasping this week as air pollution smog reduced visibility to near zero and raised air quality levels more than 130 times safe limits.

No 'good' air days for Delhi in 2023, with AQI hovering between 'poor' and 'severe'. As November pollution spikes, the capital continues to gasp for clean air

The wind speeds remained below six kilometres per hour throughout Monday, leading to stagnation and gradual build-up of local pollutants in the national Capital

Delhi's air quality slightly improved to 'very poor' on Tuesday morning, with an AQI of 382, after experiencing 'severe' levels the previous week. Schools are instructed to operate in a hybrid mode (online and offline) for all classes until further notice,