Air Quality Index — Current Affairs 2026
Current Affairs Connections
Delhi's AQI crosses 450 mark during winter 2024, GRAP Stage IV implemented
November 2024The severe air pollution episode in Delhi during November 2024 highlighted both the effectiveness and limitations of India's AQI-based response system. When AQI levels crossed 450 in multiple monitoring stations, the Commission for Air Quality Management automatically triggered GRAP Stage IV, implementing the most stringent emergency measures including construction bans, vehicle restrictions, and industrial shutdowns. This event demonstrated how AQI has evolved from a mere monitoring tool to a policy trigger mechanism. However, it also exposed gaps in the system - the reactive nature of responses, limited effectiveness of emergency measures, and the need for better forecasting to enable preventive action. The episode sparked debates about revising AQI breakpoints to align with WHO standards and strengthening the legal framework for automatic policy responses.
UPSC Angle: Expected questions on GRAP implementation, effectiveness of AQI-based emergency responses, and policy gaps in air quality management
NCAP progress review shows mixed results in achieving 2024 targets for PM reduction
September 2024The mid-term review of the National Clean Air Programme revealed that while some cities achieved significant reductions in PM2.5 and PM10 levels, many non-attainment cities still lag behind the 20-30% reduction targets set for 2024. The review highlighted the critical role of AQI monitoring in tracking progress and identifying successful interventions. Cities with robust AQI monitoring networks showed better policy responses and pollution control outcomes. However, the review also revealed data gaps in smaller cities and the need for more comprehensive monitoring infrastructure. This development underscores the importance of AQI not just as a public information tool but as a policy evaluation mechanism for large-scale environmental programmes.
UPSC Angle: Questions likely on NCAP implementation, role of monitoring in policy evaluation, and challenges in achieving air quality targets