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Dhaka Tops List of Cities with Polluted Air Today

Rtv News

  24 Jan 2025, 13:23
Photo: File Picture

Dhaka ranks first today on the list of cities with the most polluted air in the world.

On Friday (24 January) at around 9:00 am, the Air Quality Index (AQI) score of the capital was recorded at 222. This indicates that the air quality in the capital is in a "very unhealthy" state today.

According to the latest update from AQI, Vietnam's Ho Chi Minh City is right behind Dhaka, with a pollution score of 216. This means the air in this city is also very unhealthy today. The top five polluted cities include Kathmandu in Nepal, Delhi in India, and Phnom Penh in Cambodia, with pollution scores of 193, 190, and 189, respectively.

In Bangladesh, the Air Quality Index (AQI) is determined based on five criteria of pollution: particulate matter (PM10 and PM2.5), NO2, CO, SO2, and ozone (O3).

According to the AQI scale:
A score between 0 and 50 is considered good air quality.
A score between 51 and 100 is moderate or tolerable.
A score between 101 and 150 is considered unhealthy for sensitive groups.
A score between 151 and 200 is categorized as unhealthy.
A score between 201 and 300 is regarded as very unhealthy.
A score above 301 is classified as hazardous or disastrous.

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