New Delhi, Nov. 12 -- Delhi kept gasping for breaths in 'very poor' air for the 13th day in a row on Monday with heavy smog enveloping parts of the city. The mainly smog condition with wind speed upto 04 -08 kmph from southeast/east direction prevailed over the region. There will be no relief from the air pollution in the next six days. The Central Pollution Control Board (CPCB) data shows Delhi ranked sixth among the 262 cities on November 10. While Chandigarh had a higher AQI of 339, Bengaluru had the cleanest air among the metros, with an AQI reading of 72. However, this does not compare well with international cities. New York's 49 AQI was better than 238 of the 262 cities for which data was available. London's AQI reading of 76 was low...