2021年，地級及以上城市空氣質量優(yōu)良天數比率為87.5%

China's environment further improved last year according to an official report on environmental conditions in 2021.

國務院關于2021年度環(huán)境狀況和環(huán)境保護目標完成情況的報告顯示，2021年，全國生態(tài)環(huán)境質量明顯改善。

Last year, the percentage of days with good air quality was 87.5 percent in cities at and above the prefectural-level, up 0.5 percentage points year-on-year according to the report, which was submitted on Monday to the National People's Congress Standing Committee for review.
4月18日，十三屆全國人大常委會第三十四次會議聽取國務院關于2021年度環(huán)境狀況和環(huán)境保護目標完成情況的報告。報告指出，2021年，全國空氣質量持續(xù)向好。地級及以上城市空氣質量優(yōu)良天數比率為87.5%，同比上升0.5個百分點。

The average concentration of PM2.5 hazardous particles was 30 micrograms per cubic meter, down 9.1 percent year-on-year.
細顆粒物(PM2.5)平均濃度為30微克/立方米，同比下降9.1%。

The proportion of surface water at or above Grade III in the country's five-tier water quality system increased 1.5 percentage points year-on-year to 84.9 percent in 2021, and the proportion of surface water below Grade V, the lowest level, stood at 1.2 percent.
2021年，我國地表水Ⅰ—Ⅲ類水質斷面比例為84.9%，與2020年相比上升1.5個百分點；劣Ⅴ類水質斷面比例為1.2%。