Air pollution is increasing day by day in different countries of the world due to various reasons including climate change. Megacity Dhaka is also suffering from air pollution for a long time. Occasional rain improves air quality somewhat. However, the air of Dhaka is becoming unhealthy again after few days of intense heat.
As of Monday (April 22) around 8:30 am, according to the criteria of IQAir, an international air technology organization, Dhaka has become the 5th most polluted city in the world with a score of 130. Earlier on Sunday (April 21) morning, the city was ranked 20th in the list of polluted cities with a score of 92. Earlier on Saturday (April 20) morning, Dhaka was at the tenth position in the list of polluted cities with a score of 121. Meanwhile, according to IQAir criteria, Nepal’s capital Kathmandu tops the list of the world’s most polluted cities with a score of 179. Apart from this, the city of Chiang Mai of Thailand is in the second position with a score of 162, the capital of China Beijing is in the third position with a score of 160 and the city of Lahore in Pakistan is in the fourth position with a score of 155. An AQI score of zero to 50 is considered good. 51 to 100 is considered moderate; And for sensitive groups, a score of 101 to 150 is considered unhealthy. A score of 151 to 200 is considered ‘unhealthy’ air. An AQI score between 201 and 300 is considered ‘very unhealthy’. In this situation, children, elderly and sick patients are advised to limit their activities inside the house and others outside the house. Also, an AQI between 301 and 400 is considered ‘hazardous’, posing a serious health risk to city dwellers. Generally AQI is determined based on five types of pollutants; For example: particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone (O3). Air pollution poses serious health risks. It is harmful for people of all ages. However, air pollution is very harmful for children, sick people, elderly and pregnant women.
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Tags: Health risks increasing air Dhaka
