Dhaka, the bustling capital of Bangladesh, recently ranked eighth in the world for poor air quality, with an Air Quality Index (AQI) score of 159. This score falls into the ‘unhealthy’ category. It’s a troubling situation, especially since air quality can have serious health impacts.
Other cities experiencing poor air quality include Kolkata and Delhi in India, as well as Shanghai in China and Kabul in Afghanistan, with AQI scores of 189, 184, 178, and 177, respectively. These numbers highlight a growing global concern over air pollution.
The AQI scales range from 0 to 500. Scores of 50-100 are ‘moderate’ and consider sensitive groups at risk. Scores of 101 to 150 are ‘unhealthy for sensitive groups,’ and anything above 150 signals increasing risks for everyone. At scores above 300, air quality can be hazardous.
This index incorporates five key pollutants: particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), and ozone. These elements can significantly affect health, leading to conditions like stroke, heart disease, and respiratory issues.
Dhaka’s air quality tends to be worse in winter and improves during the monsoon season. Despite ongoing efforts to tackle pollution, the challenges remain substantial. Local authorities are working on initiatives, such as green spaces and stricter industrial regulations, to combat this issue.
Globally, air pollution contributes to about seven million deaths each year, according to the World Health Organization. It’s a silent killer affecting many lives around the world. Awareness and collective action are essential for improvement.
Experts advocate for more sustainable urban planning and cleaner technologies. For instance, adopting electric vehicles and enhancing public transport can help reduce emissions. Simple steps like reducing waste and increasing greenery can also make a big difference. Social media trends show increasing public concern about air quality, with many users sharing personal experiences and advocating for cleaner air.
As cities like Dhaka continue to grapple with air pollution, understanding the AQI and its health implications is crucial for residents. For more in-depth information, you can check resources from the [World Health Organization](https://www.who.int/news-room/fact-sheets/detail/ambient-(outdoor)-air-quality-and-health) and stay informed on this pressing issue.
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