Dhaka’s Air Quality Improves after Rain

Bangladesh 's capital, Dhaka, saw an increase in its air quality on Wednesday, after a rainfall in the nor'wester of the city in the early hours of the day.

Dhaka's air was rated as 'moderate' in the Air Quality Index on Wednesday noon and listed 26th among the most polluted cities in the world.

The megacity had an AQI score of 67 at 12:32 pm.

When the AQI remains between 51 and 100, the air quality is acceptable. However, some people, especially those who are unusually sensitive to air pollution, may be at risk.

Mexico's Mexico City, Saudi Arabia's Riyadh and India's Delhi had the first three spots on the list of cities with the worst air quality with AQI scores of 119, 1113 and 104, respectively.

A nor’wester accompanied by rain and gusty wind with 78kph speed swept the capital early Wednesday.

AQI, an index for the measurement of everyday air quality, informs people how healthy or unhealthy the environment in a particular city is and what health consequences might be of interest to them.

In Bangladesh, the AQI is focused on five pollutant parameters – Particulate Matter (PM10 and PM2.5), NO2, CO , SO2 and Ozone (O3).

Dhaka has long been grappling with air pollution. Its air quality usually improves during monsoon.

Source: UNB