Explainer: What to make of the variations in air quality readings
For experts, anything above the threshold is detrimental no matter which air index people rely on
Updated At : 07:18 AM Oct 25, 2025 IST
Scientists stress that irrespective of the calculations, the crux of the matter is that Delhi’s air pollution is severe. ANI
The skies of Delhi-NCR and parts of Punjab and Haryana were engulfed in a thick haze on the morning of October 21, a day after Diwali. While the government-run Central Pollution Control Board (CPCB) and private air pollution monitoring agencies were on the same page in categorising the air quality as “polluted”, the readings of a major pollutant — particulate matter 2.5 (PM2.5) — by the different agencies varied, sparking a debate.
