South Korea is still choking under heavy clouds of ultra-fine dust,... on the last day of the long weekend here in the nation.<br /> Fine dust advisories have been issued in most parts of the country,... with concentration levels in the Seoul capital region, Chungcheong and Jeollabuk-do provinces... being three to five times higher than normal.<br />The nation's weather bureau says... the air pollution could linger for an extended period of time... due to a still atmosphere over Korea which is trapping fine dust particles. <br /> <br />
