Ghaziabad, Oct. 18 -- Ghaziabad continued its streak of having the notorious distinction of being the country's most polluted city, according to the AQI bulletin issued by CPCB on Friday. On October 14, the city logged an AQI of 271 - highest in the country for the day - prompting the Commission for Air Quality Management to enforce Grap-1 in the National Capital Region. Then just two days later, on October 16, the city topped the nationwide list again, recording an AQI of 307, placing it in the "very poor" zone, which dropped negligibly to 306 on Friday. "The reduced wind velocity in the region has considerably affected the dispersal of pollutants. The primary pollutant in Ghaziabad- PM10-shoots up due to road dust and vehicular traffic during the festive season," said Ankit Kumar, regional officer at UP pollution control board at Ghaziabad. "We expect some wind activity in a day or two, resulting in the faster dispersal of suspended pollutants. Several measures under Grap, including water sprinkling, mechanized road sweeping, are being taken up regularly. We have also started with enforcement activities, and a report is expected soon," Kumar added. Meanwhile, in Noida and Greater Noida, the AQI on Friday stood at 278 and 246, respectively. Noida had emerged as the most polluted city across the country on October 15, logging an AQI of 318. "With Diwali around the corner and the Supreme Court order allowing green crackers, the pollution levels are expected to rise further in the region. Poor road conditions and traffic congestion have worsened the situation," environmentalist Sushil Raghav said....