January 28, 2021, 2:19 pm

Siyam Hoque

2020-06-25 10:24:42 BdST

AQI: Dhaka’s air quality shows improvement

Dhaka’s air quality showed improvement for the second consecutive day on Thursday morning as it ranked the 12th worst in the Air Quality Index (AQI).

The air in Dhaka was categorised as ‘moderate’ and the megacity had an AQI score of 74 at 08:45am.

When the AQI remains in between 51 and 100, there may be a risk for some people who may be unusually sensitive to particle pollution.

However, the air quality is acceptable.

Indonesia’s Jakarta, Vietnam’s Ho Chi Minh City and South Africa’s Johannesburg occupied the first three spots in the list of cities with AQI scores of 164, 159 and 140respectively.

The AQI, an index for reporting daily air quality, informs people how clean or polluted the air of a certain city is, and what associated health effects might be a concern for them.

In Bangladesh, the AQI is based on five criteria pollutants – Particulate Matter (PM10 and PM2.5), NO2, CO, SO2, and Ozone (O3).

Dhaka’s air remains mostly acceptable during the monsoon season from June to October.

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