Green score in Delhi hit by persistent poor AQI
Environment was one of the metrics under the Sustainability Pillar on which Delhi scored 56.02, slightly above the national average of 53.63, securing the 28th rank. Consistent poor air quality and high levels of microscopic particulate matter pollutants have got Delhi 42nd rank in the environment category among 49 cities with a million or more population in a survey by the Union housing and urban affairs ministry for the Ease of Living report that was released on Thursday. Environment was one of the metrics under the Sustainability Pillar on which Delhi scored 56.02, slightly above the national average of 53.63, securing the 28th rank. According to the report, for ranking the cities on environment indicators such as water quality, total tree cover, hazardous waste generation and air quality index (measuring SO2, NO2, and PM10) were considered. Despite steps by local and central agencies, Delhi’s city’s air quality takes an annual plunge every winter, with the air quality hitting ‘emergency’ levels on the AQI scale, especially between December and January. The cold conditions and low wind speed often contribute to worsening the pollution levels. A CSE analysis released on Wednesday showed that in 2020 even though the severity and duration of smog episodes were lower, the seasonal average levels of PM 2.5 was higher.
