PM2.5 Delhi

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Delhi worst in PM2.5 pollution; 447 districts breach national air quality norm: Analysis

Delhi ranked as the most polluted among 33 states and Union territories with an annual mean PM2.5 concentration of 101 micrograms per cubic metre, 2.5 times th...

By NewsDrum Desk
Nov 25, 2025 12:57 IST 2 Min read
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