Delhi air pollution: GRAP-4 measures implemented across NCR, AQI dips to 'Severe+'
December 16, 2024 23:57 ISTDelhi's 24-hour average air quality index breached the 400 mark around 10 pm on Monday amid extremely calm winds. The primary goal of GRAP-4 is to reduce immediate emissions and alleviate the impact of air pollution on public health.