The presence of pollutants such as PM 2.5 and PM 10, nitrogen dioxide, sulfur dioxide, and ozone in the air poses serious health risks, particularly for children and the elderly.

Air pollution in India's capital Delhi has soared to extremely severe levels, choking residents and engulfing the city in thick smog. Monitors recorded pollution levels of 1,500 at 15:00 IST (10:30 BST),

Air quality in northern India has worsened over the past week, with New Delhi's AQI recording a reading of 465, classified as "severe plus category", on Sunday evening due to unfavourable meteorological conditions,

Delhi recorded air pollution more than 17 times above an acceptable level as worsening smog triggered curbs on trucking and shuttered construction sites and schools.

Authorities in India’s capital shut schools, halted construction and banned non-essential trucks from entering the city on Monday after air pollution shot up to its worst level this season. Residents of New Delhi woke up to thick,

Delhi ’s government imposed the most stringent set of restrictions on the movement of vehicles and people as the toxic smog enveloping the Indian capital worsened on Monday. The city’s average air quality index was 457 in the morning,

The Indian capital closed all schools, banned lorries and halted construction work on Monday as air quality in New Delhi plummeted to its worst level this year, with a thick layer of yellowish haze engulfing the city of 22 million.