Delhi air pollution worsens: AQI hits season's worst at 481, GRAP-IV restrictions imposed

Delhi air pollution: A thick layer of smog, a toxic mix of smoke and fog, engulfed the Delhi-NCR on Monday morning, as the air pollution level dropped into the "severe-plus" category, with the overall Air Quality Index (AQI) reaching 481, marking the highest air pollution level of the season so far.

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