On Sunday morning, Dhaka’s air quality reached a ‘moderate’ level, with an Air Quality Index (AQI) score of 90. A recent rainfall helped clear out some dust and airborne pollutants.
By 10:30 AM, Dhaka ranked 14th among the world’s most polluted cities. In comparison, Cairo, Delhi, and Dakar had much worse scores, with AQIs of 193, 184, and 159, respectively. These levels indicate serious health concerns for residents.
The AQI categorizes air quality into several ranges. A score from 0 to 50 is ‘good,’ while 51 to 100 is ‘moderate.’ Beyond that, things turn unhealthy: 101 to 150 is ‘unhealthy for sensitive groups,’ 151 to 200 is ‘unhealthy,’ 201 to 300 is ‘very unhealthy,’ and scores above 301 are ‘hazardous.’
In Bangladesh, the AQI is calculated by monitoring five main pollutants: particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), and ozone. These factors significantly impact public health.
Expert opinion on air quality highlights the long-term health risks associated with polluted air. Dr. Maria Neira, a World Health Organization official, emphasizes that prolonged exposure to poor air quality can lead to serious respiratory issues and heart disease. This makes understanding our air quality essential for safeguarding our health.
Interestingly, global interest in air quality has grown. Recent surveys show that 77% of people in major cities believe air pollution is a critical issue. This trend reflects an increasing awareness and concern among urban residents regarding their health. Social media platforms have also buzzed with discussions on air quality, with hashtags like #AirQualityMatters gaining traction.
As awareness grows, so does the push for cleaner air. Governments and organizations worldwide are taking steps to fight pollution, often citing successful programs from cities like Boston and London. These programs have shown promise in reducing air pollutants and improving overall public health.
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