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.

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After taking several measures to curb air pollution, the authorities under GRAP-4, urged the elderly, children and those with respiratory, cardiovascular, or other chronic diseases to avoid outdoor activities and stay indoors,

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.

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,

This air pollution extends beyond roads and open areas, making it difficult for people to breathe even inside their homes. In this situation, an air purifier can offer protection.

Delhi's new action plan to combat rising pollution includes a ban on non-essential trucks, school closures, and remote work.