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今夜冷空气消霾 明天北京阵风6级夜间最低降至-5℃

2017-11-21 08:12:13   中国青年网

今天(21日)白天北京有轻到中度霾,空气质量不佳,市民注意做好防护。夜间又有弱冷空气来袭,风力渐大,霾将减弱消散。受冷空气影响,明天将有四级左右北风,阵风六级左右,夜间最低气温将降至-5℃,请注意防风防寒。

昨天,冷空气影响逐渐结束,白天最高气温快速回升至10℃。但是随着静稳天气形势建立,霾天气再度出现,空气质量开始转差。北京市空气重污染应急指挥部办公室于15时30分发布空气重污染蓝色预警,要求相关单位加强施工工地扬尘控制,加大对重点道路清扫保洁强度,并请广大市民做好健康防护。18时之后,北京空气质量等级转为中度污染级别。今晨,北京能见度较差,城区能见度在2-8公里,公众出行请注意交通安全。

今晨,北京能见度降低,空气质量不佳。

北京市气象台预计,今天白天多云有轻度到中度霾转晴,南风一二级转北风三四级,最高气温8℃;夜间晴间多云,北风三四级转二级,最低气温-2℃。白天大气扩散条件较差,公众出行注意做好健康防护。

今天夜间又有弱冷空气来袭,霾将减弱消散。预计傍晚到夜间北风逐渐加大,明天白天还有四级左右北风,阵风六级左右,市民请提前防范,关好门窗,外出时尽量远离高大树木、广告牌和临时搭建物,以防被落物砸伤。

受冷空气影响,明天最高气温略降至7℃,晚间最低气温降幅相对较大,将降至-5℃,早晚寒意再度加重,市民朋友早出晚归注意保暖。

从七天预报来看,本周北京天气以晴到多云为主,周四至周六最高气温7-8℃,最低气温-3~-4℃。周末还将有一股较强冷空气来袭,周日最高气温或降至4℃,时效较远,请注意关注临近预报。

气象专家提醒,今天白天空气质量不佳,市民外出时可适当进行防护;明天风力较大,出行注意防风,天干物燥,请注意用火用电安全,平时多吃蔬果,润燥补水。早晚气温低,注意防寒保暖。

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