According to the IQAir air monitoring system, at 7:51 this morning, Hanoi ranked 2nd in IQAir's list of polluted cities in the world, with an AQI index of 254, the purple level of 'very unhealthy'.
According to the IQAir air monitoring system, at 7:51 a.m. on January 20, Hanoi ranked 2nd in IQAir's list of polluted cities in the world.
Specifically, with an AQI index of 254, Hanoi's air quality is at the "very poor" purple level.
In Hanoi, the measuring station in Tay Ho district recorded the highest AQI index, a "dangerous" brown color at 431.
Ho Chi Minh City has an average yellow air quality with an AQI of 79, ranking 55th.
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 city with the best air quality among the 125 locations monitored by IQAir was Jerusalem, Israel at 12.
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 7:50 a.m. on January 20 was Phu Ly city (Ha Nam province) with an AQI index of 262 purple "very poor air quality".
Also according to VN Air, the best air quality index in the country belongs to Tra Vinh city (Tra Vinh province) with a green air quality index of 16 - good.
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.
TH (according to VNA)