GS-III: Economy, Environment, S&T
Air Quality Index
Not met yet — counts as met once you answer a question on it.
India's national AQI framework launched by the Central Pollution Control Board (CPCB) under the Swachh Bharat Mission, comprising eight pollutants (PM2.5, PM10, NO₂, SO₂, CO, O₃, NH₃, Pb) on a 0–500 scale with six colour-coded categories (Good to Severe). Integrated into the Graded Response Action Plan (GRAP) for Delhi-NCR under the Commission for Air Quality Management in National Capital Region and Adjoining Areas Act, 2021. GRAP stages I–IV mandate progressively stricter restrictions on construction, vehicles, and industries based on AQI thresholds, making AQI both a measurement tool and a policy trigger.