中(zhong)國(guo)環(huan)境(jing)監測(ce)(ce)總站(zhan)聯合(he)中(zhong)央氣(qi)(qi)象(xiang)臺(tai)和(he)北(bei)京市環(huan)境(jing)保護監測(ce)(ce)中(zhong)心以及(ji)長三角(jiao)、東北(bei)、華南(nan)、西(xi)南(nan)、西(xi)北(bei)區域空氣(qi)(qi)質(zhi)量(liang)預(yu)測(ce)(ce)預(yu)報(bao)(bao)中(zhong)心開展5月(yue)中(zhong)上旬全國(guo)空氣(qi)(qi)質(zhi)量(liang)預(yu)報(bao)(bao)會商，結果如(ru)下：  

京津冀及周邊區域  

5月中上旬，大(da)氣(qi)(qi)擴(kuo)(kuo)散(san)(san)條(tiao)(tiao)件(jian)(jian)(jian)總體一般。其中，3日(ri)，受(shou)(shou)西北冷(leng)空(kong)氣(qi)(qi)影(ying)響，大(da)氣(qi)(qi)擴(kuo)(kuo)散(san)(san)條(tiao)(tiao)件(jian)(jian)(jian)較好，區域(yu)大(da)部(bu)(bu)以(yi)良至輕(qing)(qing)度(du)污染(ran)(ran)為主(zhu)(zhu)，首(shou)要(yao)污染(ran)(ran)物(wu)為PM10和(he)O3。4～5日(ri)，區域(yu)中南(nan)部(bu)(bu)受(shou)(shou)逆溫和(he)系統性偏南(nan)風影(ying)響，大(da)氣(qi)(qi)擴(kuo)(kuo)散(san)(san)條(tiao)(tiao)件(jian)(jian)(jian)略(lve)有(you)轉差，區域(yu)大(da)部(bu)(bu)以(yi)良至輕(qing)(qing)度(du)污染(ran)(ran)為主(zhu)(zhu)，區域(yu)中部(bu)(bu)以(yi)輕(qing)(qing)至中度(du)污染(ran)(ran)為主(zhu)(zhu)，首(shou)要(yao)污染(ran)(ran)物(wu)為PM2.5和(he)O3。6～7日(ri)，受(shou)(shou)冷(leng)空(kong)氣(qi)(qi)影(ying)響，大(da)氣(qi)(qi)擴(kuo)(kuo)散(san)(san)條(tiao)(tiao)件(jian)(jian)(jian)好轉，區域(yu)大(da)部(bu)(bu)以(yi)良至輕(qing)(qing)度(du)污染(ran)(ran)為主(zhu)(zhu)，首(shou)要(yao)污染(ran)(ran)物(wu)為PM10和(he)O3。受(shou)(shou)可能(neng)的沙塵過程影(ying)響，部(bu)(bu)分城市空(kong)氣(qi)(qi)質量級別可能(neng)在(zai)現有(you)預報基礎上加重1至2級。8～12日(ri)，大(da)氣(qi)(qi)擴(kuo)(kuo)散(san)(san)條(tiao)(tiao)件(jian)(jian)(jian)逐步轉差，區域(yu)大(da)部(bu)(bu)以(yi)良至輕(qing)(qing)度(du)污染(ran)(ran)為主(zhu)(zhu)，區域(yu)中南(nan)部(bu)(bu)部(bu)(bu)分城市可能(neng)出現中度(du)污染(ran)(ran)。  

北京(jing)：5月3日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。4日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)輕(qing)(qing)至(zhi)中(zhong)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。5日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)輕(qing)(qing)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。6日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。7日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)至(zhi)輕(qing)(qing)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5和O3。8日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)輕(qing)(qing)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5和O3。9日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)至(zhi)輕(qing)(qing)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。10~11日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5。12日(ri)，空(kong)(kong)氣質(zhi)(zhi)(zhi)(zhi)(zhi)量(liang)(liang)為(wei)(wei)良(liang)(liang)至(zhi)輕(qing)(qing)度(du)(du)(du)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)，首(shou)要(yao)污(wu)染(ran)(ran)(ran)(ran)(ran)(ran)物(wu)(wu)為(wei)(wei)PM2.5和O3。  

東北區域  

5月中上旬(xun)，大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件總體(ti)一般(ban)，出現(xian)(xian)(xian)大(da)(da)范圍(wei)重污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)的可(ke)能性比較小(xiao)。其中，3日，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)受(shou)西北氣(qi)流影響，大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件較好，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)部(bu)(bu)空(kong)(kong)氣(qi)質量(liang)(liang)(liang)以(yi)(yi)優(you)(you)良為(wei)(wei)(wei)(wei)主(zhu)(zhu)(zhu)，局部(bu)(bu)地區(qu)(qu)(qu)可(ke)能出現(xian)(xian)(xian)輕(qing)(qing)度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)，首(shou)要(yao)(yao)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)物(wu)為(wei)(wei)(wei)(wei)PM2.5、PM10或(huo)(huo)(huo)O3。4~5日，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件一般(ban)，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)部(bu)(bu)空(kong)(kong)氣(qi)質量(liang)(liang)(liang)以(yi)(yi)良至輕(qing)(qing)度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)為(wei)(wei)(wei)(wei)主(zhu)(zhu)(zhu)，遼寧(ning)西部(bu)(bu)可(ke)能出現(xian)(xian)(xian)中度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)，首(shou)要(yao)(yao)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)物(wu)為(wei)(wei)(wei)(wei)PM2.5、PM10或(huo)(huo)(huo)O3。6日，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件改(gai)善(shan)，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)部(bu)(bu)空(kong)(kong)氣(qi)質量(liang)(liang)(liang)以(yi)(yi)優(you)(you)良為(wei)(wei)(wei)(wei)主(zhu)(zhu)(zhu)，局部(bu)(bu)可(ke)能出現(xian)(xian)(xian)輕(qing)(qing)度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)，首(shou)要(yao)(yao)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)物(wu)為(wei)(wei)(wei)(wei)PM2.5、PM10或(huo)(huo)(huo)O3。7~11日，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)地面逐(zhu)漸轉為(wei)(wei)(wei)(wei)西南風，大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件一般(ban)，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)部(bu)(bu)空(kong)(kong)氣(qi)質量(liang)(liang)(liang)以(yi)(yi)良至輕(qing)(qing)度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)為(wei)(wei)(wei)(wei)主(zhu)(zhu)(zhu)，遼寧(ning)中西部(bu)(bu)可(ke)能出現(xian)(xian)(xian)中度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)，首(shou)要(yao)(yao)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)物(wu)為(wei)(wei)(wei)(wei)PM2.5、PM10或(huo)(huo)(huo)O3。12~15日，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)氣(qi)擴散條(tiao)(tiao)(tiao)件轉好，區(qu)(qu)(qu)域(yu)(yu)(yu)(yu)(yu)大(da)(da)部(bu)(bu)空(kong)(kong)氣(qi)質量(liang)(liang)(liang)以(yi)(yi)良至輕(qing)(qing)度(du)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)為(wei)(wei)(wei)(wei)主(zhu)(zhu)(zhu)，首(shou)要(yao)(yao)污(wu)(wu)(wu)染(ran)(ran)(ran)(ran)物(wu)為(wei)(wei)(wei)(wei)PM10或(huo)(huo)(huo)O3；局部(bu)(bu)可(ke)能達(da)到(dao)優(you)(you)。  

長三角區域  

5月中(zhong)(zhong)(zhong)(zhong)(zhong)上旬，區域北(bei)部(bu)(bu)(bu)(bu)及(ji)內陸地區空氣(qi)(qi)質(zhi)量(liang)以(yi)良(liang)(liang)(liang)至(zhi)輕度(du)污(wu)(wu)染(ran)為(wei)主(zhu)(zhu)(zhu)，短時可(ke)能出現中(zhong)(zhong)(zhong)(zhong)(zhong)度(du)污(wu)(wu)染(ran)；其他地區以(yi)良(liang)(liang)(liang)為(wei)主(zhu)(zhu)(zhu)。其中(zhong)(zhong)(zhong)(zhong)(zhong)，3~5日(ri)(ri)前(qian)期(qi)，區域中(zhong)(zhong)(zhong)(zhong)(zhong)北(bei)部(bu)(bu)(bu)(bu)空氣(qi)(qi)質(zhi)量(liang)為(wei)良(liang)(liang)(liang)至(zhi)輕度(du)污(wu)(wu)染(ran)，首(shou)要(yao)污(wu)(wu)染(ran)物為(wei)O3；南(nan)部(bu)(bu)(bu)(bu)以(yi)良(liang)(liang)(liang)為(wei)主(zhu)(zhu)(zhu)。5日(ri)(ri)后(hou)期(qi)~7日(ri)(ri)，受降水(shui)過程影響，空氣(qi)(qi)質(zhi)量(liang)為(wei)優至(zhi)良(liang)(liang)(liang)。8~11日(ri)(ri)，區域中(zhong)(zhong)(zhong)(zhong)(zhong)北(bei)部(bu)(bu)(bu)(bu)良(liang)(liang)(liang)至(zhi)輕度(du)污(wu)(wu)染(ran)，個別城(cheng)市中(zhong)(zhong)(zhong)(zhong)(zhong)度(du)污(wu)(wu)染(ran)，首(shou)要(yao)污(wu)(wu)染(ran)物為(wei)O3；南(nan)部(bu)(bu)(bu)(bu)以(yi)良(liang)(liang)(liang)為(wei)主(zhu)(zhu)(zhu)。12~14日(ri)(ri)，大氣(qi)(qi)擴散條件不利，中(zhong)(zhong)(zhong)(zhong)(zhong)北(bei)部(bu)(bu)(bu)(bu)良(liang)(liang)(liang)至(zhi)輕度(du)污(wu)(wu)染(ran)，沿海(hai)局(ju)部(bu)(bu)(bu)(bu)中(zhong)(zhong)(zhong)(zhong)(zhong)度(du)污(wu)(wu)染(ran)，首(shou)要(yao)污(wu)(wu)染(ran)物為(wei)O3；南(nan)部(bu)(bu)(bu)(bu)以(yi)良(liang)(liang)(liang)為(wei)主(zhu)(zhu)(zhu)。15日(ri)(ri)，受降水(shui)過程影響，區域空氣(qi)(qi)質(zhi)量(liang)以(yi)良(liang)(liang)(liang)為(wei)主(zhu)(zhu)(zhu)。  

華南區域  

5月中上旬，區域(yu)(yu)整體空(kong)(kong)氣(qi)(qi)(qi)質(zhi)量(liang)以優(you)至(zhi)(zhi)良為(wei)主，湖北中部(bu)(bu)(bu)(bu)和(he)湖南部(bu)(bu)(bu)(bu)分時段可能出現(xian)輕(qing)度(du)污(wu)(wu)染。其(qi)中，3~4日(ri)(ri)，區域(yu)(yu)大(da)(da)(da)(da)部(bu)(bu)(bu)(bu)受偏東(dong)氣(qi)(qi)(qi)流(liu)和(he)降水過程影(ying)響，濕(shi)沉(chen)降清除(chu)條件(jian)有利(li)(li)，空(kong)(kong)氣(qi)(qi)(qi)質(zhi)量(liang)為(wei)優(you)至(zhi)(zhi)良，湖北中部(bu)(bu)(bu)(bu)和(he)湖南局(ju)地輕(qing)度(du)污(wu)(wu)染。5~7日(ri)(ri)，沿海省份受較強偏南氣(qi)(qi)(qi)流(liu)影(ying)響，大(da)(da)(da)(da)氣(qi)(qi)(qi)擴散(san)條件(jian)有利(li)(li)，湖北大(da)(da)(da)(da)部(bu)(bu)(bu)(bu)受降雨影(ying)響，濕(shi)清除(chu)條件(jian)有利(li)(li)，區域(yu)(yu)大(da)(da)(da)(da)部(bu)(bu)(bu)(bu)空(kong)(kong)氣(qi)(qi)(qi)質(zhi)量(liang)優(you)良，福(fu)建和(he)湖南局(ju)地輕(qing)度(du)污(wu)(wu)染。8~10日(ri)(ri)，受弱冷空(kong)(kong)氣(qi)(qi)(qi)和(he)小規模降水過程影(ying)響，大(da)(da)(da)(da)氣(qi)(qi)(qi)擴散(san)和(he)濕(shi)沉(chen)降清除(chu)條件(jian)有利(li)(li)，區域(yu)(yu)空(kong)(kong)氣(qi)(qi)(qi)質(zhi)量(liang)以優(you)良為(wei)主。11~16日(ri)(ri)，大(da)(da)(da)(da)氣(qi)(qi)(qi)擴散(san)條件(jian)一般(ban)，區域(yu)(yu)大(da)(da)(da)(da)部(bu)(bu)(bu)(bu)空(kong)(kong)氣(qi)(qi)(qi)質(zhi)量(liang)為(wei)優(you)良，湖北中部(bu)(bu)(bu)(bu)、湖南大(da)(da)(da)(da)部(bu)(bu)(bu)(bu)、廣東(dong)中西(xi)部(bu)(bu)(bu)(bu)良至(zhi)(zhi)輕(qing)度(du)污(wu)(wu)染。期間，區域(yu)(yu)首要(yao)污(wu)(wu)染物主要(yao)為(wei)PM2.5或PM10。  

西南區域  

5月中上(shang)旬(xun)，區(qu)域大部空(kong)氣(qi)質量以(yi)良(liang)為(wei)(wei)主。受(shou)高(gao)溫(wen)和少云影響(xiang)，四(si)川(chuan)盆(pen)地(di)(di)(di)在(zai)上(shang)旬(xun)末至中旬(xun)初有(you)一次O3污(wu)(wu)染過(guo)程，云貴局(ju)部城市(shi)可能出現輕度(du)(du)污(wu)(wu)染。其(qi)中，3~4日(ri)，四(si)川(chuan)盆(pen)地(di)(di)(di)氣(qi)溫(wen)較(jiao)(jiao)高(gao)，局(ju)部城市(shi)O3、PM2.5輕度(du)(du)污(wu)(wu)染；區(qu)域其(qi)他城市(shi)以(yi)良(liang)為(wei)(wei)主。5~7日(ri)，受(shou)弱(ruo)冷(leng)空(kong)氣(qi)影響(xiang)，四(si)川(chuan)盆(pen)地(di)(di)(di)、重(zhong)慶(qing)、貴州(zhou)(zhou)大部有(you)區(qu)域性降水，區(qu)域空(kong)氣(qi)質量優(you)至良(liang)。8~11日(ri)，氣(qi)溫(wen)回升，區(qu)域大部以(yi)良(liang)為(wei)(wei)主，四(si)川(chuan)盆(pen)地(di)(di)(di)部分、重(zhong)慶(qing)和云南局(ju)部城市(shi)為(wei)(wei)O3輕度(du)(du)污(wu)(wu)染，四(si)川(chuan)盆(pen)地(di)(di)(di)局(ju)部城市(shi)為(wei)(wei)中度(du)(du)污(wu)(wu)染。12~15日(ri)，四(si)川(chuan)盆(pen)地(di)(di)(di)氣(qi)溫(wen)較(jiao)(jiao)高(gao)，盆(pen)地(di)(di)(di)大部、重(zhong)慶(qing)、貴州(zhou)(zhou)和云南局(ju)部為(wei)(wei)O3輕度(du)(du)污(wu)(wu)染。  

西北區域  

5月中(zhong)上旬，區域(yu)大(da)(da)部(bu)(bu)(bu)(bu)以(yi)(yi)(yi)(yi)良(liang)(liang)至(zhi)(zhi)(zhi)輕(qing)度(du)污(wu)染(ran)(ran)為主(zhu)(zhu)；受沙(sha)(sha)塵(chen)(chen)影(ying)(ying)響(xiang)(xiang)，新疆南疆可(ke)能(neng)出現(xian)短時(shi)重度(du)及以(yi)(yi)(yi)(yi)上污(wu)染(ran)(ran)。其(qi)中(zhong)，3~4日，區域(yu)中(zhong)、西(xi)部(bu)(bu)(bu)(bu)受偏(pian)北氣(qi)(qi)流影(ying)(ying)響(xiang)(xiang)，近地面風速較(jiao)強(qiang)，新疆南疆地區、甘肅東(dong)部(bu)(bu)(bu)(bu)和河西(xi)地區、寧夏局部(bu)(bu)(bu)(bu)可(ke)能(neng)出現(xian)揚沙(sha)(sha)或浮塵(chen)(chen)天(tian)氣(qi)(qi)，受其(qi)影(ying)(ying)響(xiang)(xiang)，南疆盆(pen)地部(bu)(bu)(bu)(bu)分(fen)時(shi)段可(ke)能(neng)達到重度(du)污(wu)染(ran)(ran)，其(qi)他區域(yu)空(kong)(kong)氣(qi)(qi)質量(liang)以(yi)(yi)(yi)(yi)良(liang)(liang)至(zhi)(zhi)(zhi)輕(qing)度(du)污(wu)染(ran)(ran)為主(zhu)(zhu)。5~8日，區域(yu)大(da)(da)部(bu)(bu)(bu)(bu)地區可(ke)能(neng)出現(xian)降(jiang)水(shui)天(tian)氣(qi)(qi)，濕(shi)沉(chen)降(jiang)清除(chu)條件較(jiao)為有(you)利，區域(yu)大(da)(da)部(bu)(bu)(bu)(bu)空(kong)(kong)氣(qi)(qi)質量(liang)以(yi)(yi)(yi)(yi)良(liang)(liang)為主(zhu)(zhu)，局地為輕(qing)度(du)污(wu)染(ran)(ran)；新疆南疆受沙(sha)(sha)塵(chen)(chen)影(ying)(ying)響(xiang)(xiang)可(ke)能(neng)出現(xian)短時(shi)重度(du)及以(yi)(yi)(yi)(yi)上污(wu)染(ran)(ran)。9~14日，區域(yu)大(da)(da)部(bu)(bu)(bu)(bu)大(da)(da)氣(qi)(qi)水(shui)平(ping)擴散條件一般(ban)、垂直擴散條件有(you)利，大(da)(da)部(bu)(bu)(bu)(bu)地區空(kong)(kong)氣(qi)(qi)質量(liang)以(yi)(yi)(yi)(yi)良(liang)(liang)至(zhi)(zhi)(zhi)輕(qing)度(du)污(wu)染(ran)(ran)為主(zhu)(zhu)；新疆南疆受沙(sha)(sha)塵(chen)(chen)影(ying)(ying)響(xiang)(xiang)可(ke)能(neng)出現(xian)短時(shi)重度(du)及以(yi)(yi)(yi)(yi)上污(wu)染(ran)(ran)。15日，區域(yu)中(zhong)、西(xi)部(bu)(bu)(bu)(bu)近地面風速較(jiao)大(da)(da)，可(ke)能(neng)出現(xian)揚沙(sha)(sha)或浮塵(chen)(chen)天(tian)氣(qi)(qi)；區域(yu)東(dong)部(bu)(bu)(bu)(bu)受冷暖氣(qi)(qi)流交匯影(ying)(ying)響(xiang)(xiang)，可(ke)能(neng)出現(xian)降(jiang)水(shui)，濕(shi)沉(chen)降(jiang)清除(chu)條件有(you)利；區域(yu)大(da)(da)部(bu)(bu)(bu)(bu)以(yi)(yi)(yi)(yi)良(liang)(liang)至(zhi)(zhi)(zhi)輕(qing)度(du)污(wu)染(ran)(ran)為主(zhu)(zhu)，新疆南疆受沙(sha)(sha)塵(chen)(chen)影(ying)(ying)響(xiang)(xiang)可(ke)能(neng)出現(xian)短時(shi)重度(du)及以(yi)(yi)(yi)(yi)上污(wu)染(ran)(ran)。

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