The Ministry of Ecology and Environment notified the national ambient air quality status in December and January-December 2022

　　Chinanews.com, January 28th. On the 28th, the Ministry of Ecology and Environment notified the national ambient air quality status in December 2022 and January-December on its official WeChat public account.

The data shows that in December, the average number of days with good air quality in 339 prefecture-level and above cities across the country was 83.2%, a year-on-year decrease of 3.2 percentage points; the average concentration of PM2. μg/m3, up 4.2% year-on-year; the average O3 concentration was 79 μg/m3, down 4.8% year-on-year; the average SO2 concentration was 11 μg/m3, flat year-on-year; the average NO2 concentration was 30 μg/m3, down year-on-year 11.8%; the average CO concentration was 1.1 mg/m3, a year-on-year decrease of 8.3%.

　　From January to December, the average number of days with good air quality in 339 prefecture-level and above cities across the country was 86.5%, a year-on-year decrease of 1.0 percentage points; the average concentration of PM2.5 was 29 μg/m3, a year-on-year decrease of 3.3%; the average concentration of PM10 was The average concentration of O3 was 145 μg/m3, a year-on-year increase of 5.8%; the average concentration of SO2 was 9 μg/m3, which was flat year-on-year; decreased by 8.7%; the average concentration of CO was 1.1 mg/m3, which was the same as last year.

　　In December, the average proportion of days in "2+26" cities in Beijing, Tianjin, Hebei and surrounding areas was 72.3%, a year-on-year decrease of 6.8 percentage points; the average concentration of PM2.5 was 60 μg/m3, an increase of 11.1% year-on-year; the average concentration of O3 was 67 micrograms per cubic meter, a year-on-year increase of 6.3%.

From January to December, the average proportion of good days was 66.7%, a year-on-year decrease of 0.5 percentage points; the average concentration of PM2.5 was 44 μg/m3, a year-on-year increase of 2.3%; the average O3 concentration was 179 μg/m3, a year-on-year increase of 4.7% .

　　The proportion of good days in Beijing in December was 96.8%, which was the same as the same period last year; the PM2.5 concentration was 17 μg/m3, which was 37.0% lower than the same period last year; the O3 concentration was 63 μg/m3, which was the same as the same period last year.

From January to December, the proportion of good days was 78.4%, a year-on-year decrease of 0.5 percentage points; the PM2.5 concentration was 30 μg/m3, a year-on-year decrease of 9.1%; the O3 concentration was 171 μg/m3, a year-on-year increase of 14.8%.

　　The average proportion of good and good days in 41 cities in the Yangtze River Delta region in December was 79.2%, a year-on-year decrease of 2.2 percentage points; the average concentration of PM2.5 was 51 μg/m3, a year-on-year decrease of 1.9%; down 17.8%.

From January to December, the average proportion of good and good days was 83.0%, a year-on-year decrease of 3.7 percentage points; the average concentration of PM2.5 was 31 μg/m3, which was flat year-on-year; the average concentration of O3 was 162 μg/m3, a year-on-year increase of 7.3%.

　　The average proportion of good and good days in 11 cities in the Fenwei Plain in December was 59.2%, a year-on-year decrease of 12.7 percentage points; the average concentration of PM2.5 was 70 μg/m3, an increase of 12.9% year-on-year; rose 10.9%.

From January to December, the average proportion of good and good days was 65.2%, a year-on-year decrease of 5.0 percentage points; the average concentration of PM2.5 was 46 μg/m3, a year-on-year increase of 9.5%; the average O3 concentration was 167 μg/m3, a year-on-year increase of 1.2% .

　　In December, among the 168 key cities, Zhangjiakou, Fuzhou, and Beijing had relatively good air quality (from 1st to 20th); cities such as Xianyang, Xi’an, and Weinan had relatively poor air quality (from the bottom to the bottom). 1st to tied for bottom 19th), see Attached Table 1.

　　From January to December, among the 168 key cities, cities such as Lhasa, Haikou and Zhoushan had relatively good air quality (from 1st to 20th); cities such as Weinan, Xianyang and Jingzhou had relatively poor air quality (from bottom 1 to tie for bottom 20).

Cities such as Zhangjiakou, Kunming and Qinhuangdao have relatively good changes in air quality (from 1st to 20th); cities such as Jingzhou, Weinan and Zhumadian have relatively poor air quality changes (from the bottom 1 to the bottom 20).

See Attached Tables 2 and 3.

Attached Table 1: List of Top 20 and Bottom 20 Cities in Air Quality Ranking of 168 Key Cities in December 2022

Attached Table 2: List of Top 20 and Bottom 20 Cities in Air Quality Rankings of 168 Key Cities from January to December 2022

Attached Table 3: List of Top 20 and Bottom 20 Cities Ranked by Air Quality Changes in 168 Key Cities from January to December 2022