India activated its toughest anti pollution measures in Delhi and nearby regions after air quality in the capital fell to the worst levels seen so far this winter, prompting authorities to warn residents to stay indoors.
The Commission for Air Quality Management ordered the implementation of Stage Four of the Graded Response Action Plan on Saturday evening, according to an advisory from the environment ministry. The move brings immediate restrictions across Delhi and surrounding areas that are home to more than 30 million people.
By Sunday, air quality readings across multiple monitoring stations exceeded 450 on the official index, placing conditions firmly in the severe category, Central Pollution Control Board data showed. An index reading below 50 is considered good.
Stage Four restrictions include a ban on older diesel trucks entering the city, a halt to construction activity including public infrastructure projects, and the introduction of hybrid schooling to reduce exposure for children.
Authorities urged residents to limit outdoor activity, particularly children, older adults, and people with respiratory or heart conditions. Officials also advised the use of masks for those who must step outside.
The Commission for Air Quality Management said the sharp deterioration was driven by high moisture levels and a shift in wind direction, which reduced the dispersion of pollutants and intensified smog formation.
Delhi experiences severe air pollution every winter as cold air traps emissions from vehicles, construction dust, industrial sources, and crop burning in neighboring states. The seasonal smog routinely ranks among the worst in the world and poses significant public health risks.
Officials said restrictions would remain in place until weather conditions improve and pollution levels fall to safer thresholds. Authorities continue to monitor air quality trends and have warned that prolonged exposure could worsen health outcomes if conditions persist.
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Africa Digital News, New YorkÂ
