LAHORE
Thousands of citizens of Lahore, one of the world´s most polluted cities, complained of breathing difficulties and irritable eyes as a blanket of thick smog was forecast to persist for several days.
Readings of dangerous "fine particulate matter" were more than four times the World Health Organisation´s recommended level, exceeding 104 micograms per cubic metre in the worst-hit parts of the city of around 10 million.
Visibility plunged to less than 20 metres and citizens wore face masks to help with breathing.
Kashif Hussain, a 34-year-old cattle market worker, told AFP "the smog has been going on since Wednesday and I had to take the day off work today because my eyes have gone red." "It´s been very severe and I was prescribed drops by my doctor," he said.
"Toxic smog blanketing Lahore, air quality deplorable," tweeted a resident Sabrina Toppa.
So-called fine particulate matter are particles 2.5 micrometers in diameter or smaller produced by combustion, and some industrial processes. They are linked to eye-irritation, coughing, asthma and even heart attacks as well as premature death.
The United Nations last week reported some 300 million children live with outdoor air so polluted it can cause serious physical damage, with the situation most acute in South Asia.
"Pollutants don´t only harm children´s developing lungs. They can actually cross the blood-brain barrier and permanently damage their developing brains and, thus, their futures," said Anthony Lake, executive director of UNICEF.
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