The IQAir air quality index application this morning showed that, compared to many previous days, Hanoi has improved in terms of pollution index. At 8:30, this application ranked Hanoi as the 6th most polluted in the world with AQI level red 186 - a level harmful to human health.
However, measuring points in the West Lake area still recorded high pollution indexes at the purple threshold - very harmful to human health such as Quang Khanh AQI 238, To Ngoc Van AQI 221, Ho Tay Compound AQI 210, Quang Ba AQI 205...
Other areas recorded red air quality index such as Hoang Quoc Viet AQI 196, Pho Lo Duc AQI 187, Cu Khoi (Long Bien) AQI 189, Minh Khai AQI 177...
According to the National Center for Hydro-Meteorological Forecasting, the cold air mass is currently moving south.
Around January 9, this strengthened cold air mass will affect the Northeast region, then affect the North Central region and some places in the Northwest and North Central regions.
From the afternoon of January 9, the area from Ha Tinh to Binh Dinh will have rain, showers and scattered thunderstorms, with heavy rain in some places.
The Meteorological Agency warns that thunderstorms may cause tornadoes, lightning and strong gusts of wind. Localized heavy rains may cause flooding in low-lying areas; flash floods in small rivers and streams; and landslides on steep slopes.
The AQI is an air quality index that ranges from 0-500, with higher numbers indicating higher levels of pollution and health impacts. Readings above 300 are considered unhealthy, while 0-50 indicate good air quality.
