From March 13-20, air quality in some cities did not change much compared to the previous week.
The capital city of Hanoi has braced for four days a week with a very high concentration of PM2.5 fine dust, notably poor air pollution level on March 16 was twice the permitted limit of QCVN 05:2013/BTNMT.
The environmental experts said that weather condition was impacted by air pollution quality; particularly heavy fog and prolonged drizzle were in days of poor air quality.
The environmental experts said that weather condition was impacted by air pollution quality; particularly heavy fog and prolonged drizzle were in days of poor air quality.
