According to data available from a smartphone application named AirVisual, which shows the user real-time air pollution index of any city across the globe, Dhaka’s score signifies unhealthy air quality. It is one of the reasons behind the bad air quality here.”He added: “The air quality in Dhaka will continue to remain like this throughout February and March. “However, the quality of air will improve during the monsoon season.”Also Read- Bangladesh grapples with polluted airThe United States Environmental Protection Agency (EPA) developed the Air Quality Index to report air quality. An AQI value over 300 represents hazardous air quality and below 50 the air quality is good. The AQI debuted in 1968, when the National Air Pollution Control Administration undertook an initiative to develop an air quality index and to apply the methodology to Metropolitan Statistical Areas.

Source: Dhaka Tribune February 15, 2018 04:30 UTC