Since it was launched in 2015, the Air Quality Index (AQI) has been widely used in reporting and discussing air quality in India.
There are multiple apps and websites that can be accessed to find out the air pollution levels, almost always in AQI terms.
However, there are often discrepancies between the numbers reported in these different sources leading to added confusion to an already complex issue.
This article tries to address some common questions and misconceptions about the AQI.
The AQI was created to help communicate the severity of air quality levels for multiple pollutants to the public, the risks they carry and recommended defensive measures through a single composite index, a colour-code and broad categories of air quality levels (good, moderate, poor, etc.).