Air pollution situation: Hanoi out of top 10 most polluted cities

According to the IQAir air monitoring system, at 7:45 a.m. on January 10, Hanoi's air quality index had improved significantly.

With an AQI of 88, Hanoi has fallen out of the top 10 most polluted cities in the world, ranking 34th on the list, with air quality at the yellow level, “moderate.”

Compared to January 9, the pollution level in Hanoi on January 9 decreased from the "unhealthy" red level to the "moderate" yellow level.

In Hanoi, the measuring station in Long Bien district recorded the highest AQI index, orange "not good for sensitive groups" at 137.

Meanwhile, Ho Chi Minh City's AQI ranked 10th, with an air quality index of 168, the "unhealthy" red level.

This figure will vary by time and time zone, as other cities around the world enter their rush hour, when traffic and manufacturing activity peak.

Also at this time, the 3 cities with the best air quality in the list of 122 locations monitored by IQAir are Sydney and Canberra (Australia) and Montreal (Canada) with the same level of 11.

In Vietnam, according to VN Air - an application providing information on air quality on smartphones developed by the Ministry of Natural Resources and Environment, the most polluted area in the country as of 7:45 a.m. is Thu Dau Mot city (Binh Duong province) with an AQI index of 149, poor air quality.

Ranked after Binh Duong in terms of air pollution index is Thai Binh province with an AQI index of 128.

Also according to VN Air, the best air quality index in the country at 8:00 a.m. on January 7 was in Dong Xoai city (Binh Phuoc province) with an air quality index of 16, Good level.

AQI is an air quality monitoring index ranging from 0-500, the higher the index, the higher the level of pollution and the higher the impact on health.

VN Air is an application researched and developed by the Northern Environmental Monitoring Center under the General Department of Environment - Ministry of Natural Resources and Environment.

VN Air uses data sources exploited from monitoring results of automatic continuous air environment monitoring stations managed by the General Department of Environment and environmental monitoring stations managed by local Departments of Natural Resources and Environment.

Regularly updating the air quality index will help people respond promptly when air quality declines, such as minimizing outdoor activities, limiting opening doors, using masks that can limit the effects of pollutants in the air, using air purifiers, etc.

The Department of Environmental Pollution Control (Ministry of Natural Resources and Environment) recommends that people regularly monitor air quality to proactively limit the impact caused by air pollution.

The Department of Health Environment Management (Ministry of Health) recommends that when the air quality index is at a very poor level (201-300), normal people should avoid outdoor activities for long periods of time or participate in strenuous physical activities; encourage indoor activities; and avoid activities in areas with high risk of air pollution.

If you have to work in areas with a high risk of pollution, you should use masks that can prevent fine dust; if you have to participate in traffic, you should increase the use of public transport and limit the use of motorbikes and bicycles to reduce exposure to polluted air.

At the same time, limit opening windows and doors during times of heavy air pollution; clean your nose and gargle with saline morning and night, especially after going out; wash your eyes with saline in the evening before going to bed.

For sensitive people, it is necessary to avoid all outdoor activities, switch to indoor activities or change to another day when the air quality index is better; limit opening windows and doors during times of heavy air pollution.

According to the National Center for Hydro-Meteorological Forecasting, on the morning of January 10, cold air affected most of the North Central region and some places in the Northwest.

The North, North and Central Central regions will continue to be cold. From the night of January 10-12, the mountainous and midland regions of the North will be very cold, with frost and frost possible in high mountainous areas; the Northern Delta and Thanh Hoa regions will be very cold.

The lowest temperature in this cold air mass in the North is generally 9-12 degrees Celsius, in the mountainous areas of the North 6-9 degrees Celsius, in the high mountainous areas below 5 degrees Celsius; in the North Central region it is generally 10-13 degrees Celsius; in the area from Quang Binh to Hue it is generally 14-17 degrees Celsius.

Hanoi capital will be cold, from the night of January 10-12, it will be very cold. The lowest temperature in this cold air mass is commonly 9-12 degrees Celsius.