What is the real-time ranking of national air quality?

According to the national air quality status from June to July in 20 19 released by the Ministry of Ecology and Environment, Haikou, Zhuhai, Lishui, Huangshan, Shenzhen, Zhongshan, Lhasa, Xiamen, Zhoushan and Taizhou ranked first in the national air quality 10.

2019-1-July, the average number of excellent days in 337 cities at or above the prefecture level was 80.9%, down 0.6 percentage points year-on-year; 155 urban ambient air quality standards, an increase of 9; The concentration of PM2.5 was 37 μ g/m3, which was flat year-on-year.

The concentration of PM 10 was 65 μ g/m3, down 3.0% year on year. O3 concentration was 145 μ g/m3, up1.4% year-on-year; SO2 concentration was 1 1 μ g/m3, down 21.4% year-on-year; The concentration of nitrogen dioxide was 26 μ g/m3, which was the same as last year. The concentration of carbon monoxide was 65438 0.4 mg/m3, which was the same as that of last year.

The average number of excellent days from June to July in "2+26" cities in Beijing, Tianjin and Hebei and its surrounding areas was 46.2%, down 6. 1 percentage point year-on-year; The concentration of PM2.5 was 6 1 μ g/m3, up 3.4% year-on-year.

The proportion of excellent days in Beijing from June to July was 59.0%, down 1.4 percentage points year-on-year; The concentration of PM2.5 was 45 μ g/m3, down 13.5% year-on-year.

Yangtze River Delta region, April1city1-July, the average proportion of excellent days was 74.8%, down 1.6 percentage points year-on-year; The concentration of PM2.5 was 43 μ g/m3, down 4.4% year-on-year.

Wei Fen Plain 1 1 City1-July, the average number of excellent days was 54.8%, down 3.6 percentage points year-on-year; The concentration of PM2.5 was 59 μ g/m3, up 3.5% year-on-year.

From June to July in 20 19, the air quality in 20 key cities such as Xingtai, Linfen and Shijiazhuang was relatively poor (168- 149). The air quality in 20 cities such as Haikou, Lhasa and Shenzhen is relatively good (from 1 to 20).

Improvement measures:

Air quality is not only related to the quality of human life, but also deeply affects other creatures on the earth. Therefore, we should consciously safeguard the obligation of environmental protection, strive to improve the living standards of human beings and continuously improve air quality.

The main measures are as follows:

1. Establish an air quality monitoring mechanism and implement the national environmental protection policy.

2. Strengthen industrial energy development and constantly replace fossil energy.

3, the development of solar energy and other pollution-free new energy, expand the source of human energy.

4, the introduction of laws and regulations, strictly limit the holiday firecrackers, reduce the emission of harmful gases.

5. Provide central heating to reduce heating costs.

6. Plant trees frequently and open more canals to reduce sewage discharge.

7. Use an air purifier to prevent indoor air pollution.

8. Travel by bus and subway as much as possible to reduce the use of private cars; Install an exhaust gas processor or use fuel to reduce automobile exhaust emissions.

9. Renovation of polluting and energy-consuming factories, and harmless treatment of waste gas and wastewater to achieve energy conservation and emission reduction.

People's Daily Online-The ranking of national air quality in the first seven months was announced.

Baidu encyclopedia-air quality