Envirocatalysts Blog

The Indian Express Zainab Ashraf The Indian Express Zainab Ashraf

Delhi air still ‘very poor’; ‘unaccounted sources’ contribute most to pollution

Delhi’s air quality stayed in the “very poor” range two days after Diwali, with an AQI of 353. Data from the Decision Support System showed that over 36% of the pollution came from “unaccounted sources”, meaning emissions not clearly identified or tracked. Transport, industry, and waste burning also added to the problem. Sunil Dahiya from Envirocatalysts explained that these unaccounted sources likely include power plants, industries, and crop burning in nearby states, which are not properly captured in pollution records.

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Hindustan Times Zainab Ashraf Hindustan Times Zainab Ashraf

External factors behind cap­ital’s ‘very poor’ AQI

The deteri­or­a­tion in Delhi’s air qual­ity, which was skirt­ing the “very poor” cat­egory on Sunday, was caused more by external factors than from sources within the cap­ital, accord­ing to the Centre’s Decision Sup­port Sys­tem (DSS). Data on Sunday showed at least 67.89% of Delhi’s total PM2.5 con­tri­bu­tion was from external sources.

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