The sky over Hanoi is hazy due to pollution, with air quality in some areas reaching poor levels.

TPO - On the morning of November 4th, Hanoi was shrouded in thick fog, obscuring tall buildings and reducing visibility. The air quality index (AQI) at 9 AM reached 195, a level considered unhealthy.

04/11/2024 | 09:56

TPO - On the morning of November 4th, Hanoi was shrouded in thick fog, obscuring tall buildings and reducing visibility. The air quality index (AQI) at 9 AM reached 195, a level considered unhealthy.

VIDEO : Close-up view of the foggy Hanoi sky on the morning of November 4th.

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (image 1).

From early morning on November 4th, Hanoi was shrouded in a thick layer of fog, making tall buildings and apartment complexes appear hazy in a milky white haze. The fog not only obscured visibility but also negatively impacted people's health due to the high levels of air pollution.

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (image 2).

At 6:30 AM at the Cau Giay intersection, the sky was covered in a thick layer of fog. According to residents, this hazy condition has lasted continuously for several days.

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (image 3).

The Lotte Tay Ho building is obscured by an opaque white color.

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (photo 4).

According to the Environmental Pollution Control Department, the period from September of the previous year to March of the following year is the "season" for air pollution in the Northern Delta provinces, especially in Hanoi and surrounding areas.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 5).

According to the IQAir website, the AQI (Air Quality Index) in Hanoi at 9:00 AM on November 4th was 195 - reaching a level that is unhealthy, and people are advised to wear masks when going outside.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 6).

Viewed from above, the rare green spaces such as parks and gardens are clearly areas less affected by pollution and fine dust thanks to their natural dust-filtering capabilities.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 7).

The sky over Hanoi is hazy due to pollution, with air quality in some areas reaching poor levels (image 8).

The sky over Hanoi is hazy due to pollution, with air quality in some areas reaching poor levels (image 9).

At 7:30 AM, the roads along West Lake were still shrouded in thick fog, with no sign of the sun. People exercising had to wear face masks to protect their health.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 10).

The Environmental Pollution Control Department has indicated that motorcycles, cars, and other vehicles emit CO, NO₂, and fine particulate matter (PM2.5, PM10), leading to a decline in air quality, especially in densely populated cities like Hanoi.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 11).

At 8:30 AM, an old motorbike emitted white smoke while traveling on Au Co Street.

The sky over Hanoi is hazy due to pollution, with air quality in some areas at a poor level (image 12).

In addition, burning trash outdoors, using honeycomb charcoal, and other daily activities also release many pollutants, contributing to increased air pollution levels. (Image recorded on Vo Chi Cong Street at 9 am this morning).

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (image 13).

The city sky was gray.

The sky over Hanoi is hazy due to pollution; air quality is poor in some areas (image 14).

The Department of Environmental Health Management ( Ministry of Health ) advises that when the air quality index is at a poor level (AQI from 150 to 200), people should limit outdoor activities or strenuous physical activities.