Another day, and Delhi remains, yet again, shrouded in a thick blanket of smog.

The capital continues to experience ‘very poor’ air quality in most areas, with AQI levels exceeding 300 in at least 23 of the city’s 38 monitoring stations.

Questions, however, have also been raised about the accuracy of the government’s Air Quality Index (AQI) data — the very numbers meant to tell people how toxic the air really is.

To find out more about how this data is being collected, processed, and displayed, The Quint visited several air quality monitoring stations across Delhi.

Are Water Sprinkers Being Used to Manipulate AQI Readings?

Questions about the accuracy of Delhi’s air quality data began to surface after a video posted by the Aam Aadmi Party (AAP) last week showed water tankers sprin

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