2023年1—6月，全國339個地(di)級及以上(shang)(shang)城市(shi)平(ping)(ping)均(jun)(jun)空氣質量優良天數比(bi)(bi)(bi)例為(wei)81.4%，同(tong)(tong)比(bi)(bi)(bi)下降(jiang)3.2個百(bai)分點(dian)；平(ping)(ping)均(jun)(jun)重度(du)及以上(shang)(shang)污(wu)染天數比(bi)(bi)(bi)例為(wei)2.6%，同(tong)(tong)比(bi)(bi)(bi)上(shang)(shang)升1.4個百(bai)分點(dian)；PM2.5平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)34微(wei)克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)上(shang)(shang)升6.2%；PM10平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)61微(wei)克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)上(shang)(shang)升10.9%；O3平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)146微(wei)克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)上(shang)(shang)升1.4%；SO2平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)9微(wei)克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)持(chi)平(ping)(ping)；NO2平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)22微(wei)克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)上(shang)(shang)升4.8%；CO平(ping)(ping)均(jun)(jun)濃(nong)度(du)為(wei)1.1毫克(ke)(ke)/立(li)(li)方米，同(tong)(tong)比(bi)(bi)(bi)持(chi)平(ping)(ping)。