Dhaka, the bustling capital of Bangladesh, has gained attention for being one of the most polluted cities globally. Just recently, it recorded an Air Quality Index (AQI) of 272, placing it third on the pollution list. This level falls in the ‘very unhealthy’ range, suggesting it could pose serious health threats to residents.
In comparison, Delhi in India topped the list with an alarming AQI of 541, while Lahore in Pakistan and Kolkata in India followed at 312 and 204, respectively. These numbers highlight a growing concern over air quality in South Asia.
The AQI helps people understand air quality at a glance. Here’s the breakdown: an AQI from 50 to 100 is considered ‘moderate,’ which means air quality is generally acceptable. From 101 to 150, it’s ‘unhealthy for sensitive groups.’ Moving higher, from 151 to 200 is labeled ‘unhealthy,’ and 201 to 300 is ‘very unhealthy.’ Anything above 301 is ‘hazardous’ and can severely impact health.
In Bangladesh, the AQI is determined by analyzing five main pollutants: particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), and ozone. This method helps pinpoint the sources of pollution and informs residents about potential health risks.
Experts have noted that air quality often worsens during winter months and improves with the arrival of monsoon rains. A recent report from the World Health Organization (WHO) states that air pollution is linked to around seven million premature deaths globally each year, primarily due to respiratory and heart diseases.
Public reaction has been intense. Many Dhaka residents have taken to social media to express their concerns, sharing tips on how to cope with the air quality crisis. Some even advocate for more green spaces and stricter regulations on emissions to improve their living conditions.
As air quality continues to decline, cities like Dhaka must prioritize cleaner air initiatives. Addressing pollution not only improves health outcomes but also supports the overall well-being of the community.
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