这是雾霾笼罩下的长沙福元路大桥（1月20日摄）。连日来，湖南省会长沙被雾霾笼罩，造成市区能见度低，给市民健康和交通安全带来不利影响。据长沙市环境监测中心站介绍，长沙自2013年元旦实施空气质量新国标以来，全市PM2.5日均值为每立方米285微克，单个站点最高值为每立方米308微克。空气质量达标的天数仅3天，PM2.5监测结果更是超标2至3倍。当地气象部门已经连续拉响大雾预警。新华社记者 龙弘涛 摄      This is fog haze under cover of changsha FuYuan road bridge(1 month and day perturbation).For the last few days,Hunan changsha will be fog haze shrouded,Cause the low visibility,For the public health and traffic safety bring adverse effect.According to the environmental monitoring center in changsha city is introduced,Changsha since 2013, New Year's day implementation air quality since the new national standard,The PM2.5 day average for each cubic meter 285 micrograms,A single site for 308 micrograms per cubic meters high.Air quality days only 3 days,PM2.5 monitoring results is overweight 2 to 3 times.Local meteorological department has continued the fog warning.The xinhua news agency LongHongTao perturbation 

这是雾霾笼罩下的长沙橘子洲拱极楼（1月20日摄）。新华社记者 龙弘涛 摄 This is fog haze under cover of changsha JuZiZhou circumpolar floor(1 month and day perturbation).The xinhua news agency LongHongTao perturbation

这是雾霾笼罩下的长沙湘江主航道（1月20日摄）。新华社记者 龙弘涛 摄 This is fog haze under cover of changsha xiangjiang river main channel(1 month and day perturbation).The xinhua news agency LongHongTao perturbation

这是雾霾笼罩下的长沙主城区（1月20日摄）。新华社记者 龙弘涛 摄 This is fog haze shrouded in the changsha(1 month and day perturbation).The xinhua news agency LongHongTao perturbation