Residents in India's northern states woke up to another day of poor air quality on Tuesday, as a layer of dense fog shrouded most of the region and pollution in the capital Delhi remained severe.India battles air pollution every winter as cold,

Toxic smog engulfed much of northern India on Monday and pollution readings in New Delhi hit their highest of this pre-winter season.

Footage shows India’s capital covered in a thick layer of toxic smog:::: New Delhi, IndiaPollution levels continued to soar high as Delhi recorded an air quality index (AQI) score of 692 in the morning.

Residents in India's northern states woke up to another day of poor air quality on Tuesday, as a layer of dense fog shrouded most of the region, and pollution in the capital Delhi remained severe. India battles air pollution every winter as cold,