Air Quality Index: Dhaka air second worst yet again
Dhaka once again ranked second worst in Air Quality Index (AQI) yesterday morning.
The air quality of the capital was classified as “very unhealthy” as it had an AQI score of 211 at 7:52am.
Mongolia’s Ulaanbaatar and Pakistanan’s Lahore were the worst and third worst cities on the list, with scores of 238 and 182 respectively.
When the AQI value is between 201 and 300, the entire population is likely to be affected. Active children and adults, and people with respiratory diseases are advised to avoid all outdoor exertion in this situation.
AQI tells how clean or polluted the air is, and what associated health effects might be a concern for public. The AQI focuses on health effects that one might experience within a few hours or days after breathing polluted air.
In Bangladesh, the AQI is based on five kinds of pollutants: Particulate Matter (PM10 and PM2.5), NO2, CO, SO2 and Ozone (O3). The Department of Environment has also set national ambient air quality standards for these pollutants.
These standards aim to protect against adverse human health impacts.
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