Urban air quality has a very important impact on Residents' life and health. The state is also very concerned about urban air quality and has been taking various measures to intervene and improve urban air quality. Recently, the ranking of air quality in April 2019 has been freshly released. Everyone must be very concerned about the ranking of air quality in their own cities. What about the air quality of major cities in April? This article brings you the ranking of urban air quality in April 2019. Let's have a look.
The proportion of excellent days in April in Beijing was 66.7%.
On April 17, the Ministry of ecological environment announced the national air quality in April 2019. In April 2019, the average proportion of excellent days in 337 prefecture level and above cities in China was 88.8%, an increase of 7.0 percentage points year-on-year; The concentration of PM2.5 was 32 μ g / m3, a year-on-year decrease of 5.9%. Among the 168 key cities, 20 cities such as Haikou, Lhasa and Zhuhai have relatively good air quality; The air quality of 20 cities such as Xingtai, Taiyuan, Anyang, Tangshan, Handan and Jinan is relatively poor.
The proportion of excellent days in Beijing in April was 66.7%, an increase of 10.0 percentage points year-on-year; The concentration of PM2.5 was 48 μ g / m3, a year-on-year decrease of 18.6%. From January to April, the proportion of excellent days was 70.0%, with a year-on-year increase of 5.0 percentage points; The concentration of PM2.5 was 51 μ g / m3, a year-on-year decrease of 10.5%.
The average proportion of excellent days in 337 prefecture level and above cities in April 2019 was 88.8%, an increase of 7.0 percentage points year-on-year; PM2.5 concentration was 32 μ g / m3, with a year-on-year decrease of 5.9%; PM10 concentration was 64 μ g / m3, a year-on-year decrease of 14.7%. From January to April, the average proportion of excellent days was 79.9%, an increase of 1.9 percentage points year-on-year; The ambient air quality of 102 cities reached the standard, an increase of 25 year-on-year; The concentration of PM2.5 was 49 μ g / m3, unchanged year-on-year; PM10 concentration was 79 μ g / m3, a year-on-year decrease of 3.7%.
The average proportion of excellent days in '2 + 26' cities in Beijing, Tianjin, Hebei and surrounding areas in April was 65.6%, an increase of 11.9 percentage points year-on-year; The concentration of PM2.5 was 52 μ g / m3, a year-on-year increase of 8.3%. From January to April, the average proportion of excellent days was 53.2%, an increase of 0.1 percentage points year-on-year; PM2.5 concentration was 81 μ g / m3, with a year-on-year increase of 8.0%.
The proportion of excellent days in Beijing in April was 66.7%, an increase of 10.0 percentage points year-on-year; The concentration of PM2.5 was 48 μ g / m3, a year-on-year decrease of 18.6%. From January to April, the proportion of excellent days was 70.0%, with a year-on-year increase of 5.0 percentage points; The concentration of PM2.5 was 51 μ g / m3, a year-on-year decrease of 10.5%.
The average number of excellent days in 41 cities in the Yangtze River Delta in April was 91.1%, up 17.0 percentage points year-on-year; The concentration of PM2.5 was 38 μ g / m3, a year-on-year decrease of 13.6%. From January to April, the average proportion of excellent days was 75.7%, an increase of 2.6 percentage points year-on-year; The concentration of PM2.5 was 55 μ g / m3, a year-on-year decrease of 5.2%.
The average number of excellent days in 11 cities in Fenwei plain in April was 73.9%, an increase of 6.6 percentage points year-on-year; The concentration of PM2.5 was 47 μ g / m3, a year-on-year increase of 17.5%. From January to April, the average proportion of excellent days was 52.4%, an increase of 1.0 percentage points year-on-year; The concentration of PM2.5 was 83 μ g / m3, a year-on-year increase of 7.8%.
In April 2019, among the 168 key cities, 20 cities such as Xingtai, Taiyuan and Anyang had relatively poor air quality; The air quality of 20 cities such as Haikou, Lhasa and Zhuhai is relatively good.
From January to April 2019, among 168 key cities, 20 cities such as Linfen, Shijiazhuang and Xingtai have relatively poor air quality; The air quality of 20 cities such as Haikou, Lhasa and Shenzhen is relatively good&# 8203;&# 8203;&# 8203;&# 8203;&# 8203;&# 8203;&# 8203;