Delhi's air quality plummeted to hazardous levels, prompting the implementation of emergency measures. Conflicting AQI readings between Indian and international platforms sparked confusion, highlighting differences in measurement scales and methodologies.
source https://timesofindia.indiatimes.com/etimes/trending/delhis-aqi-why-did-it-show-494-locally-and-1600-globally/articleshow/115497772.cms
source https://timesofindia.indiatimes.com/etimes/trending/delhis-aqi-why-did-it-show-494-locally-and-1600-globally/articleshow/115497772.cms