Guiyang ranked 4th!The Ministry of Ecology and Environment notified the National ambient air quality in January 2022

2022-07-23 0 By

The Ministry of Ecology and Environment today briefed the media on China’s ambient air quality in January 2022.Twenty of the 168 key cities, including Lhasa, Haikou and Kunming, had relatively good air quality in January.Among them, Guiyang ranks the 4th.In January, the proportion of days with good air quality in 339 cities at prefecture level and above was 73.4%, down 1.2 percentage points year-on-year.The average concentration of PM2.5 was 56 micrograms per cubic meter, up 3.7 percent year on year.The average concentration of PM10 was 76 μ g/m3, down 14.6% year on year.The average concentration of O3 was 82 μ g/m3, down 3.5% year on year.The average concentration of SO2 was 11 μ g/m3, down 21.4% year on year.The average concentration of NO2 was 31 μ g/m3, down 13.9% year on year.The average concentration of CO was 1.3 mg/m3, down 13.3% year on year.In January 2022, the average proportion of good days in “2+26” cities in Beijing-Tianjin-Hebei and surrounding areas was 42.3%, down 7.1 percentage points from the same period last year.PM2.5 concentration was 87 micrograms per cubic meter, up 20.8% year on year.O3 concentration was 73 μ g/m3, down 1.4% year-on-year.The proportion of good days in Beijing in January was 83.9%, up 6.5 percentage points year-on-year.PM2.5 concentration was 45 micrograms per cubic meter, up 18.4% year on year.O3 concentration was 63 μ g/m3, down 6.0% year on year.The average proportion of good days in 41 cities in the Yangtze River Delta region in January was 64.9%, down 12.7 percentage points year-on-year.PM2.5 concentration was 63 micrograms per cubic meter, up 14.5% year on year.O3 concentration was 86 μ g/m3, up 8.9% year on year.The average number of good days in 11 cities in the Fenhe and Weihe Plain in January was 32.3%, 18.7 percentage points lower than last year.PM2.5 concentration was 97 micrograms per cubic meter, up 34.7% year on year.O3 concentration was 80 μ g/m3, up 9.6% year on year.In January, among the 168 key cities, 20 cities, including Lhasa, Haikou and Kunming, had relatively good air quality (ranked from 1st to 20th).20 cities, including Jiaozuo, Heze and Urumqi, have relatively poor air quality (from the bottom 1 to the bottom 20), as shown in the table.Top 20 and bottom 20 cities in the air quality ranking of 168 key cities in January 2022