Weekly Current Affairs

Notice

  • Several cities, including Agra, Ahmedabad, Patna, Delhi and Varanasi, were choked by particulate matter pollution, when northern parts of the country celebrated Deepavali.
  • Fireworks and stagnant air led to a precipitous dip in air quality in a third of the 29 cities monitored by the Central Pollution Control Board (CPCB).
  • Concentrations of fine particulate matter rose to levels that harm respiratory health in normal people and severely debilitate those with illnesses.
  • The Air Quality Index (AQI) reading for Agra was 384, Ahmedabad 385, and Faridabad and Delhi the worst, at 428 and 445. An AQI of 100 is the limit for good air quality.
  • The AQI has deteriorated from October 27 in northern cities, primarily due to an ‘anticyclone’ effect – a shift in wind-patterns that prevents dust and particulate matter from being flushed out. 6. Deepavali and dipping temperature raised concentrations of PM2.5 (particulate matter 2.5 micrometres and smaller) and PM10 unlike in 2015, when winds swept pollutants away.