An AQI between 151 and 200 is considered “unhealthy”, while between 201 and 300 is considered “very unhealthy”, and 301–400 is considered “hazardous”, depending on the health of people living in the affected area. poses a serious health risk.
In Bangladesh, the AQI is based on five criteria pollutants – particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone.
Dhaka has been grappling with the problem of air pollution for a long time. Its air quality usually turns unhealthy in winters and improves during monsoons.
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