VOV.VN - On April 14, residents of Hanoi are once again facing dangerous air quality, with multiple monitoring stations reporting unhealthy and even very unhealthy levels.

VOV.VN - Air pollution in Hanoi showed no improvement on the morning of February 11, as the capital remained among the world's most polluted cities with an Air Quality Index (AQI) ranging from 151 to 200.

VOV.VN - Air pollution has been worsening in Northern Vietnam in recent days due to unfavorable weather along with significant sources of emissions.

Hanoi has set a target to ensure that up to 80% of the days in a year have air quality index (VN-AQI) levels rated as good or moderate, based on data from standard national and city monitoring stations.

VOV.VN - The Pollution Control Department, under the Ministry of Natural Resources and Environment, reported that the air quality index (AQI) in Hanoi reached over 200 at 18:00 p.m. on December 10.

VOV.VN - The air quality of Hanoi, the capital of Vietnam, reached an “unhealthy” level on October 7 morning, placing it at the top of the world’s most air polluted cities list.

VOV.VN - The capital experienced a day with very poor air quality on March 22, with the conditions seriously affecting human health, notably the elderly, children, and people suffering from respiratory diseases.

VOV.VN - The air quality in Hanoi reached “very unhealthy” levels in the early morning of March 5, placing the capital at the top of the world’s most air polluted cities list.

VOV.VN - The Vietnamese capital ranked fourth among the top 100 worst air-polluted cities in the world on November 28, according to data released by Switzerland-based air quality monitor IQAir AirVisual.

VOV.VN - The morning of August 11 saw Hanoi engulfed in fog amid the air quality index (AQI) recording a bad level in the capital.