Delhi Chokes Under Blanket Of Smog
Alarm over Delhi's rising pollution spiked on Tuesday as residents woke up to a sepia haze in the morning, eyes smarting and an irritation in the nose and throat. The air quality index, which measures the concentration of poisonous particulate matter in the air, hit the "severe" level of 451 on a scale where the maximum reading is 500 and where anything above 100 is considered unhealthy.
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