India ordered schools in and around Delhi to offer online classes, and encouraged people to work from home and postpone private gatherings, as air quality in the capital and surrounding areas deteriorated sharply yesterday.
The curbs come ahead of Diwali, the festival of lights, which will be celebrated tomorrow and is usually marked by the widespread use of firecrackers that further worsens the air quality.
Pollution is an annual problem in many parts of northern India from the onset of winter as cold, heavy air traps vehicle emissions, construction dust and smoke from crop waste burning.
The problem is exacerbated in big cities such as Delhi — home to 20mn people — due to a high number of vehicles and construction activity, leaving many residents battling respiratory problems.
Delhi is typically ranked the world's most polluted city several times each winter by Swiss group IQAir, which measures air quality levels based on the concentration of toxins.
Yesterday, the capital recorded an air quality index of 382, according to data from the Central Pollution Control Board, which considers an AQI of up to 50 to be 'good'.
The Commission for Air Quality Management imposed the restrictions yesterday under a graded action plan, which mandates stronger curbs as pollution levels spike.
Its order also urged local governments in Delhi and surrounding regions to consider allowing companies and government offices to let half of their workers work from home.
AIR QUALITY TO WORSEN FURTHER, MINISTER SAYS
Air quality was made worse by unfavourable meteorological conditions, with forecasts indicating it could slip into the 'severe' category in the coming days, the commission said in its order.
‘From tomorrow, the weather is going to become worse, winds will completely stop, which will worsen the AQI,’ Delhi Environment Minister Manjinder Singh Sirsa said in a statement.
Residents said the toxic air was impacting their health.
‘The pollution makes it hard to breathe, and also makes me feel anxious… I also feel a pinching sensation in my eyes,’ said Sarvesh, a Delhi resident who gave only his first name.

