2023年1—6月(yue)，全國339個(ge)地級(ji)及以(yi)上(shang)(shang)城市(shi)平(ping)(ping)均(jun)(jun)(jun)(jun)空氣質量優(you)良天數比(bi)(bi)例為(wei)81.4%，同(tong)(tong)比(bi)(bi)下降3.2個(ge)百分點；平(ping)(ping)均(jun)(jun)(jun)(jun)重度(du)及以(yi)上(shang)(shang)污染(ran)天數比(bi)(bi)例為(wei)2.6%，同(tong)(tong)比(bi)(bi)上(shang)(shang)升(sheng)(sheng)(sheng)1.4個(ge)百分點；PM2.5平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)34微克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)上(shang)(shang)升(sheng)(sheng)(sheng)6.2%；PM10平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)61微克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)上(shang)(shang)升(sheng)(sheng)(sheng)10.9%；O3平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)146微克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)上(shang)(shang)升(sheng)(sheng)(sheng)1.4%；SO2平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)9微克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)持平(ping)(ping)；NO2平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)22微克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)上(shang)(shang)升(sheng)(sheng)(sheng)4.8%；CO平(ping)(ping)均(jun)(jun)(jun)(jun)濃(nong)度(du)為(wei)1.1毫(hao)克(ke)/立(li)方(fang)米(mi)(mi)(mi)，同(tong)(tong)比(bi)(bi)持平(ping)(ping)。