CURRENT AFFAIRS

Detailed explanation-1: -Out of the 50 ‘most polluted cities’ in the world, the Indian city Ghaziabad in UP has been given the second spot. Ghaziabad provided an average Air Quality Index (AQI) of 2.5 particulate matter in 106.6µg/m3. China’s Hotan most polluted city in 2020 with a PM2. 5 of 110.2µg/m3.

Detailed explanation-2: -5 levels, according to the latest State of Global Air report on air quality and health in cities. While New Delhi and Kolkata rank first and second, respectively, Mumbai stands 14th on the list. The study ranked cities on the basis of two major air pollutants found - fine particulate matter (PM2.

Detailed explanation-3: -Uttar Pradesh’s Ghaziabad was adjudged the second most polluted city out of the 50 ‘most polluted cities’ in the world in 2020 by a report prepared by British company HouseFresh. Ghaziabad reported an average Air Quality Index (AQI) of 2.5 particulate matter (PM) in 106.6µg/m3, the report said.

Detailed explanation-4: -While Delhi is at the top of the list of most polluted cities, Faridabad ranks second with an annual PM2. 5 concentration of 95.6µg/m3. Ghaziabad is third with a reading of 91.25µg/m3.

Detailed explanation-5: -On the basis of average AQI data of various cities of different countries were compared to find out the top 10 most polluted cities in the world in 2022. Kashgar, China was in first place, followed by New Delhi, India.