Every year when winter arrives, India's capital region is choked by smog and smoke. Experts say there are already solutions waiting to be implemented, but more political will is needed.

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.

The AQI in Delhi dropped to ‘very poor’ category by Monday evening due to low winds and continued to be at the same level on Tuesday morning.

Delhi's air quality worsens to near 'severe' levels, prompting schools to continue online classes amid pollution concerns.