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|The air quality in Hanoi remained at an average level (Photo: Environment and Resources News)|
According to the Vietnam Environment Administration (Ministry of Natural Resources and Environment), in the first half of May, the weather of most regions of the country has turned to summer, there are many days with thunderstorms.
The wind caused the diffusion of pollutants in the air, so the air quality of many areas has also improved.
Most metropolitan areas including Ha Noi, Ha Long (Quang Ninh Province), Viet Tri (Phu Tho Province), Nha Trang and HCM City saw air quality index (AQI) at good and moderate levels, according to the Vietnam Environment Administration.
|The air quality in many provinces and cities has improved (Photo: Bao tin tuc)|
The concentration of fine dust PM2.5 level recorded in Ha Noi was higher than other areas but the air quality was still considered at an average level – measuring between 51 and 100, according to VNS.
The concentration of fine dust PM2.5 in Ha Noi sligthly exceeded Viet Nam’s standard of 50 micrograms per one cu.m of air on May 2nd, 5th and 9th. However, it was still within the permissible limit from April 11-17.
During the period from 11/5 to 17/5, the average PM2.5 value of 24 hours at all stations was within the permitted limits, the air quality was better.
|The urban area will likely continue to be maintained at a fairly good level (Photo: Vision)|
In general, May is the beginning of the rainy season, so the air quality in many provinces and cities nationwide, especially in Hanoi and the Northern provinces, has improved more than in the first months of the year.
The period of highest air pollution in the year (from September 2019 to March 2020) has passed, according to News.
In the near future, except for some days with special meteorological conditions, air quality in the urban area will likely continue to be maintained at a fairly good level, said a representative of the Vietnam Environment Administration.
Earlier, the VEA said air quality has improved in several cities in March and April due to social distancing measures.
In January and February, the air quality in Ha Noi was bad around half of the time, but that did not happen on any day in March, the administration said.
It attributed the improvement to the suspension of many social and economic activities.
The Vietnam Environment Administration cited that on April 17, only one out of ten monitoring stations in the city recorded AQI of more than 100 (which is considered unheathy) compared with five on May 9, after social distancing ended.
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