Air quality in the latest 24 hours in Hanoi has seen half of the measures reaching the "very bad" level and gradually worsened, according to the Hanoi Agency of Environmental Protection (AEP).

Data: AEP. Graphic: Anh Kiet

On November 22 afternoon, the AEP said that Hanoi’s air quality index (AQI) measured at 10 monitoring stations in the city was in the range of from 124 to 174.

Compared to air quality a day earlier, Hanoi’s AQI increased considerably and was mostly at the 'bad' and 'very bad' level, with the highest readings recorded at Minh Khai (174), Pham Van Dong (168) and Hang Dau (165).

Other areas had AQI below 150 such as Hoan Kiem, My Dinh, Tay Mo, Tan Mai. Kim Lien’s AQI was recorded at 124, the lowest reading for November 22.

In recent days, the capital city’s AQI has worsened. On November 21, only two locations were at the very bad level, but the AQI in five locations saw very bad indexes on November 22.

Data: AEP. Table: Anh Kiet

The AEP repeated the recommendations that Hanoi’s residents should follow air quality information where they are living and working before going out to prevent diseases.

Besides, sensitive groups including children, the elderly and people with respiratory diseases should limit their time outdoors.

When travelling on roads, people need to strictly follow traffic laws to reduce traffic congestion. The Hanoi police should strengthen traffic regulation in some areas with high traffic density such as Pham Van Dong, Hang Dau, Minh Khai, among others.