生(sheng)態環境部(bu)近日向媒(mei)體公布了2019年4月(yue)和1-4月(yue)全國空氣質量狀況(kuang)。

全國(guo)337個(ge)地(di)級(ji)及以(yi)上(shang)城市(shi)2019年4月平(ping)(ping)(ping)均優良(liang)天(tian)數比(bi)(bi)(bi)例為(wei)(wei)(wei)(wei)(wei)88.8%，同(tong)(tong)(tong)比(bi)(bi)(bi)上(shang)升(sheng)7.0個(ge)百(bai)分點；PM2.5濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)32微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)5.9%；PM10濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)64微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)14.7%；O3濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)135微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)6.2%；SO2濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)10微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)16.7%；NO2濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)25微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)3.8%；CO濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)1.0毫克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)持(chi)(chi)平(ping)(ping)(ping)。1-4月，平(ping)(ping)(ping)均優良(liang)天(tian)數比(bi)(bi)(bi)例為(wei)(wei)(wei)(wei)(wei)79.9%，同(tong)(tong)(tong)比(bi)(bi)(bi)上(shang)升(sheng)1.9個(ge)百(bai)分點；102個(ge)城市(shi)環(huan)境空氣質(zhi)量(liang)達(da)標，同(tong)(tong)(tong)比(bi)(bi)(bi)增加25個(ge)；PM2.5濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)49微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)持(chi)(chi)平(ping)(ping)(ping)；PM10濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)79微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)3.7%；O3濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)119微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)4.8%；SO2濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)13微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)下(xia)(xia)降(jiang)23.5%；NO2濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)30微(wei)(wei)克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)持(chi)(chi)平(ping)(ping)(ping)；CO濃(nong)(nong)度(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)1.5毫克(ke)(ke)/立(li)(li)方(fang)米(mi)(mi)，同(tong)(tong)(tong)比(bi)(bi)(bi)持(chi)(chi)平(ping)(ping)(ping)。

京津(jin)冀及周邊地區“2+26”城市(shi)4月(yue)平均(jun)優良天數比(bi)例(li)為65.6%，同(tong)比(bi)上升11.9個百(bai)分點；PM2.5濃度(du)為52微克/立(li)(li)方(fang)米，同(tong)比(bi)上升8.3%。1-4月(yue)，平均(jun)優良天數比(bi)例(li)為53.2%，同(tong)比(bi)上升0.1個百(bai)分點；PM2.5濃度(du)為81微克/立(li)(li)方(fang)米，同(tong)比(bi)上升8.0%。

北(bei)京(jing)市4月(yue)優良(liang)天(tian)數(shu)比例為(wei)66.7%，同(tong)比上升10.0個(ge)百分點(dian)；PM2.5濃度為(wei)48微克(ke)/立(li)(li)方(fang)米，同(tong)比下降18.6%。1-4月(yue)，優良(liang)天(tian)數(shu)比例為(wei)70.0%，同(tong)比上升5.0個(ge)百分點(dian)；PM2.5濃度為(wei)51微克(ke)/立(li)(li)方(fang)米，同(tong)比下降10.5%。

長三角(jiao)地區41個(ge)城市4月平均優良天(tian)數(shu)比(bi)例為(wei)91.1%，同比(bi)上升(sheng)(sheng)17.0個(ge)百分點；PM2.5濃度為(wei)38微克/立(li)方米(mi)，同比(bi)下(xia)降13.6%。1-4月，平均優良天(tian)數(shu)比(bi)例為(wei)75.7%，同比(bi)上升(sheng)(sheng)2.6個(ge)百分點；PM2.5濃度為(wei)55微克/立(li)方米(mi)，同比(bi)下(xia)降5.2%。

汾渭平原11個城市4月平均優良(liang)天數(shu)比(bi)(bi)例為(wei)(wei)73.9%，同(tong)比(bi)(bi)上(shang)升(sheng)6.6個百(bai)分(fen)點；PM2.5濃(nong)度為(wei)(wei)47微克/立方米(mi)，同(tong)比(bi)(bi)上(shang)升(sheng)17.5%。1-4月，平均優良(liang)天數(shu)比(bi)(bi)例為(wei)(wei)52.4%，同(tong)比(bi)(bi)上(shang)升(sheng)1.0個百(bai)分(fen)點；PM2.5濃(nong)度為(wei)(wei)83微克/立方米(mi)，同(tong)比(bi)(bi)上(shang)升(sheng)7.8%。

2019年(nian)4月，168個重點城(cheng)市中邢臺、太原、安陽市等20個城(cheng)市空氣質(zhi)量相對(dui)較差(cha)（從第(di)168名(ming)(ming)到第(di)149名(ming)(ming)）；海口、拉薩、珠海市等20個城(cheng)市空氣質(zhi)量相對(dui)較好(hao)（從第(di)1名(ming)(ming)到第(di)20名(ming)(ming)）。

2019年1-4月，168個重點城市中臨汾、石家莊、邢臺市等20個城市空氣質量相對較差（從第168名到第149名）；海口、拉薩、深圳市等20個城市空氣質量相對較好（從第1名到第20名）。

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