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　　預(yù)??(yu)計??(ji)今??(jin)天??(tian)白?(bai)天??(tian)??，京?(jing)城??(cheng)將??(jiang)持??(chi)續(xù)??(xu)受?(shou)到?(dao)外??(wai)來??(lai)沙??(sha)塵??(chen)天?(tian)氣??(qi)影??(ying)響??(xiang)??，PM10以??(yi)3級??(ji)輕??(qing)度??(du)污??(wu)染??(ran)為??(wei)主??(zhu)；傍??(bang)晚??(wan)至??(zhi)前??(qian)半??(ban)夜??(ye)??，預(yù)??(yu)計??(ji)外??(wai)來??(lai)沙??(sha)塵??(chen)傳??(chuan)輸??(shu)影??(ying)響??(xiang)加??(jia)大??(da)??，本??(ben)市??(shi)PM10濃??(nong)度??(du)明??(ming)顯??(xian)上??(shang)升??(sheng)??，預(yù)??(yu)計??(ji)可??(ke)達(dá)??(da)到??(dao)3-4級??(ji)輕??(qing)中??(zhong)度??(du)污??(wu)染??(ran)水??(shui)平??(ping)??，峰??(feng)值祝(zhi)時??(shi)段??(duan)可??(ke)達(dá)?(da)到?(dao)4-5級??(ji)中??(zhong)重??(zhong)度??(du)污??(wu)染??(ran)??。??24日??(ri)凌??(ling)晨??(chen)至?(zhi)上??(shang)午??(wu)??，轉(zhuǎn)??(zhuan)冷??(leng)高??(gao)壓??(ya)偏??(pian)北??(bei)風(fēng)??(feng)??，預(yù)??(yu)計??(ji)沙?(sha)塵??(chen)影?(ying)響??(xiang)有??(you)所??(suo)減??(jian)弱??(ruo)??，PM10濃??(nong)度??(du)預(yù)??(yu)計??(ji)可??(ke)逐??(zhu)步??(bu)降??(jiang)至??(zhi)2級??(ji)良??(liang)水??(shui)平??(ping)；24日??(ri)下??(xia)午??(wu)至??(zhi)夜??(ye)間??(jian)??，京??(jing)津??(jin)冀??(ji)區(qū)??(qu)域??(yu)地??(di)面??(mian)轉(zhuǎn)??(zhuan)持??(chi)續(xù)??(xu)偏?(pian)東?(dong)南??(nan)風(fēng)??(feng)??，存??(cun)在??(zai)沙??(sha)塵??(chen)污??(wu)染??(ran)回??(hui)流??(liu)風(fēng)??(feng)險??(xian)??，預(yù)??(yu)計??(ji)PM10可??(ke)達(dá)??(da)到??(dao)2-3級??(ji)良?(liang)至?(zhi)輕??(qing)度??(du)污?(wu)染?(ran)水??(shui)平??(ping)??。。