Air Quality Index

Articles

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  Environment

  CAQM Invokes GRAP Stage-I in Delhi-NCR as AQI Reaches 245

  The CAQM invoked all 25 action points of Stage-I of the GRAP across the NCR with immediate effect after Delhi's average AQI climbed to 245, in the poor band.

  21 October 2026 · 2 min read

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  Environment & Ecology

  Air Pollution and Air Quality: Pollutants, AQI and Laws

  Air pollution notes for exams: primary and secondary pollutants, London and photochemical smog, acid rain, PM2.5, the AQI categories and India's laws.

  28 September 2026 · 4 min read