In recent days, the sky in Ho Chi Minh City has been foggy, many high-rise buildings have become blurred, and visibility is limited. On air monitoring applications, air quality in many areas of Ho Chi Minh City is warned to be unhealthy.
By 2:00 PM on September 16, IQAir's AirVisual air quality monitoring application recorded that the air quality in Ho Chi Minh City was at an unhealthy level, with an AQI index of 159. The current PM2.5 concentration is 12.6 times higher than the annual PM2.5 guidance value of the WHO.
Talking to Lao Dong Newspaper, Mr. Tran Van Hung - Deputy Director of the Southern Hydrometeorological Station - said that this morning, cloudy air appeared in the area of Ho Chi Minh City, slightly reducing visibility.
In essence, this phenomenon may be related to a number of meteorological factors such as seasonal weather conditions, fog, thermal inversion, or a combination of meteorological and environmental conditions.
Through analyzing meteorological factors observed at Tan Son Hoa Meteorological Station, it shows that the visibility in recent days in Ho Chi Minh City is still quite good, although in reality it has slightly decreased compared to the clear days.
I think it is necessary to consider more air quality monitoring data and related environmental information to have a more complete and accurate assessment of the causes and nature of the above phenomenon.
Whether the cause is meteorological fog or dust, particles floating in the air, the phenomenon of reduced visibility can still have a certain impact on traffic activities. Therefore, when participating in traffic, it is necessary to pay attention to controlling speed, especially in the early morning and in areas and routes with high traffic density" - Deputy Director of the Southern Hydrometeorological Station said.
In case of fine dust or reduced air quality, people, especially children, the elderly and people with respiratory diseases, should limit prolonged outdoor activities and proactively implement appropriate health protection measures.
