PM IST Delhi's air quality turned 'severe' for the first time this season on Wednesday, with the AQI soaring to 418. The national capital also overtook the Pakistani city Lahore to become the world's most polluted city in Swiss group IQAir's live rankings.

Delhi overtook Lahore on Wednesday to become the world's most polluted city in Swiss group IQAir's live rankings. India's pollution control authority said the national capital's 24-hour air quality index (AQI) score had touched 418.

Delhi overtook Pakistan ’s Lahore as the world’s most polluted city in Swiss group IQAir’s live rankings, with an air quality index (AQI) score of more than 1,000, which is considered “hazardous”, but India ’s pollution authority said the AQI was around 350.

Delhi and its neighbouring cities are experiencing pollution levels that are at least 30-35 times the safe limit recommended by the World Health Organization (WHO). Every year, De