NEW DELHI, Nov 13 (Reuters) – India’s capital Delhi overtook Lahore in Pakistan to become the world’s most polluted city on Friday, with air quality reaching hazardous levels and visibility dropping as smog blanketed the city of 20 million people.
• Air quality index (AQI) in Delhi was “hazardous” at 334, making it the most polluted global major city, according to Swiss group IQAir, which measures air quality levels based on the concentration of toxins
• An AQI reading up to 50 is considered good with little or no health risk
• India’s official Central Pollution Control Board pegged the AQI higher at 403 and rated it “severe”
• The Swiss and Indian readings vary due to the different AQI scales and methodologies used to calculate and classify air pollution levels
• Cars and motorcycles emerged from dense smog, which also appeared to obscure street lights on the city’s main roads, videos from news agency ANI showed
• Pollution is a seasonal problem in many parts of northern India and neighbouring Pakistan, as the cold, heavy air of winter traps vehicle emissions, construction dust and smoke from agricultural burning
(Reporting by Hritam Mukherjee; Editing by Kate Mayberry)
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