Ministry of Ecology and Environment: In May

China News Service, June 18th. According to the official WeChat news of the Ministry of Ecology and Environment, the Ministry of Ecology and Environment notified the media on the 18th and the national environmental air quality status from May and January to May. In May, the average number of days of excellent air quality in 339 prefecture -level and above cities nationwide was 85.2%, a year -on -year decrease of 2.6 percentage points.

Overall situation

In May, the average number of days of excellent air quality in 339 prefecture -level and above cities across the country was 85.2%, a year -on -year decrease of 2.6 percentage points; the average PM2.5 concentration was 22 micrograms/cubic meter, which was flat year -on -year; the average PM10 concentration was 45 micrograms/cubic cubic cubic cube. Mi, a year -on -year decrease of 4.3%; the average concentration of O3 was 153 micrograms/cubic meter, an increase of 7.0%year -on -year; the average concentration of SO2 was 8 micrograms/cubic meter, which was flat year -on -year; the average concentration of NO2 was 18 micrograms/cubic meter, a year -on -year decrease of 5.3%; The average CO concentration was 0.7 mg/cubic meter, a year -on -year decrease of 12.5%.

From January to May, the average number of air quality in 339 prefecture -level and above cities across the country was 85.1%, an increase of 0.5 percentage points year -on -year; the average concentration of PM2.5 was 35 micrograms/cubic meter, a year -on -year decrease of 5.4%; the average concentration of the PM10 was to be a year -on -year; 59 micrograms/cubic meter, a decrease of 9.2%year -on -year; the average concentration of O3 was 138 micrograms/cubic meter, an increase of 8.7%year -on -year; the average concentration of SO2 was 9 micrograms/cubic meter , Year -on -year decreased by 8.0%; the average concentration of CO was 1.2 mg/cubic meter, which was flat year -on -year.

From January to May of 2022

From January to May of 2022, the concentration and year -on -year changes in the six indicators of 339 prefecture -level and above cities in the country

Key areas

In May, the average number of excellent days of "2+26" cities in Beijing, Tianjin, Hebei and surrounding areas was 62.0%, a year -on -year decrease of 1.7 percentage points; PM2.5 concentration was 28 micrograms/cubic meter, a year -on -year decrease of 15.2%; the average concentration of O3 was 190 Micro/cubic meter, a year -on -year increase of 6.7%. From January to May, the average number of excellent days was 66.8%, a year -on -year increase of 3.5 percentage points; PM2.5 concentration was 51 micrograms/cubic meter, a decrease of 3.8%year -on -year; the average concentration of O3 was 162 micrograms/cubic meter, an increase of 12.5%year -on -year.

The proportion of excellent days in Beijing in May was 61.3%, a year -on -year decrease of 12.9 percentage points; PM2.5 concentration was 21 micrograms/cubic meters, an increase of 5.0%year -on -year; the average concentration of O3 was 211 micrograms/cubic meter, a year -on -year increase of 27.9%. From January to May, the proportion of excellent days was 81.5%, a year -on -year increase of 13.3 percentage points; PM2.5 concentration was 33 micrograms/cubic meter, a year -on -year decrease of 28.3%; the average concentration of O3 was 163 micrograms/cubic meter, a year -on -year increase of 28.3%.

The average percentage of excellent days in May in 41 cities in the Yangtze River Delta was 73.2%, a year -on -year decrease of 9.8 percentage points; PM2.5 concentration was 26 micrograms/cubic meters, an increase of 4.0%year -on -year; the average concentration of O3 was 177 micrograms/cubic meter, an increase of rising year -on -year 8.6%. From January to May, the average number of excellent days was 80.8%, a year -on -year decrease of 7.0 percentage points; PM2.5 concentration was 38 micrograms/cubic meter, an increase of 5.6%year -on -year; the average concentration of O3 was 156 micrograms/cubic meter, an increase of 13.9%year -on -year.

The average percentage of excellent days in May of the 11 cities in the Fenwei Plain was 70.4%, an increase of 0.9 percentage points year -on -year; PM2.5 concentration was 26 micrograms/cubic meters, a year -on -year decrease of 13.3%; the average concentration of O3 was 176 micrograms/cubic meter, a decrease of year -on -year decrease 3.3%. From January to May, the average number of excellent days was 61.8%, a year -on -year decrease of 4.5 percentage points; PM2.5 concentration was 56 micrograms/cubic meter, an increase of 7.7%year -on -year; the average concentration of O3 was 151 micrograms/cubic meter, an increase of 12.7%year -on -year.

Comparison of air quality nation and key areas from January to May 2022

Key city ranking

In May, of the 168 key cities, 20 cities including Haikou, Lhasa, and Guiyang City were relatively good (from the first place to the 19th place); the air quality of cities such as Taiyuan, Tangshan, and Yangquan City was relatively poor ( From the penultimate to the 19th place), see Table 1.

From January to May, of the 168 key cities, 20 cities including Haikou, Lhasa, and Zhoushan City were relatively good (from the first to 20th); The poor (from the penultimate to the 19th place to the 19th place), see Table 2.

Attachment 1

In May 2022, 168 key cities rank the top 20 and latter 20 cities in the top 20 and latter cities

Attach Table 2

From January to May of 2022, 168 key cities ranked in the top 20 and latter 20 cities.

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