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我国气候网讯 昨日（3月16日）下午开端，北京沙尘"东山再起"。今日回流沙尘影响规模扩展至全市，向阳、丰台等多区空气质量到达严峻污染等级。估计，19日晚上开端，沙尘影响逐步完毕。
受偏南风影响，北京今日沙尘影响逐步加剧。据北京市生态环境中心监测显现，到15时，向阳、丰台、石景山、密云、怀柔、门头沟等地空气质量到达严峻污染等级，昌平、海淀、西城、东城、房山空气质量到达重度污染等级，首要污染物均为PM10。
周末前，沙尘气候还将有所重复。据我国气候网首席气候剖析师胡啸剖析，今日晚上，受弱冬风影响，北京沙尘有所削弱，明日再度增强。
19日晚上开端，受降水沉降效果，沙尘影响逐步完毕。本周末北京空气质量将转好。
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