- Delhi air pollution levels at ‘severe plus’, authorities say bbc.co.uk
- Delhi’s 2nd-worst air day on record, SC says Grap-4 to go on till further orders The Times of India
- Pollution in Delhi hits record high, cloaking city in smog The Guardian
- New Delhi air pollution: Schools closed and construction stopped as smog worsens to levels far above WHO safety limit Sky News
- Delhi imposes most stringent set of restrictions as smog hangs over Indian capital The Independent
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