On the afternoon of February 22, the Vietnam Environment Administration reported air quality in some major cities in the country in the first two months of the year.
According to the observed data on AQI index collected in some urban areas in the North, from January 1 to February 20, the number of days with average and poor air quality is quite high. .
Summary data show that in the first 2 months of the year, Hanoi had only 7 days of good air quality (AQI <50), 6 days of bad air (AQI> 150) and the remaining days of air. moderate to poor. The PM2.5 fine dust index is higher than other areas and at some times exceeds the permitted value.
According to the results of calculating the AQI index on the stations in Hanoi from January 1 to February 18, about 50% of the days have poor or very poor air quality (AQI> 100). Particularly on January 13, air quality was the worst during the above period.
For the past 2 days, Hanoi's air has been continuously at a bad level. The city is surrounded by a gloomy atmosphere all day. Photo: Duy Hieu
On the occasion of the Lunar New Year of the Rat (23-29 / 1), air quality is significantly improved, basically at a good level, when the amount of traffic in Hanoi is very small, production activities, and crop is also limited.
However, in the last 1 week, the monitoring results show that the index of fine dust tends to increase continuously. Especially, PM2.5 has exceeded 3 times the permitted limit on February 20-21.
Specifically, in the past 2 days, the atmosphere was very bad. At the monitoring station in My Dinh, the fine dust index showed that the air was at a dangerous level at 2am on 21/2. Hanoi continues to be the city with the highest fine dust index in the country.
At TP. Ho Chi Minh City, the observation agency also noted that in the first 2 months, the city had days of good air quality accounted for 30%, the average accounted for 64% and only 6% of the air days were at bad levels. The monitoring results also showed that the fine dust index exceeded the allowed limit in the days of January 6 to January 16.
"Only when the weather is changing, such as when rain, wind speed increases or fog falls, can air quality improve," the report said.
In the face of continued bad weather in urban areas, the General Department of Environment recommends that people should regularly monitor the air quality news, use dust masks when going out and restrict. Open the door at home.
According to: Zing.vn
