Lahore comes alive at night. But this year’s record onslaught of cold-weather smog — residents call it the “fifth season” — has broken its rhythms.
The authorities in Punjab, home to 130 million people, have told half the province’s work force to stay at home in areas with severe air pollution.
The city of Lahore reported hazardous levels of air pollution on Sunday. Pakistani officials have blamed India for some of it.