An AQI between 101 and 200 is considered “unhealthy”, especially for sensitive groups.
Similarly, an AQI between 201 and 300 is called “poor”, while a reading of 301 to 400 is considered “hazardous”, posing a serious health risk to residents.
AQI, an index for reporting daily air quality, is used by government agencies to tell people how safe or polluted the air in a certain city is, and the associated health effects they may be concerned about. Can
In Bangladesh, the AQI is based on five criteria pollutants – particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone.
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