Delhi's air quality has plunged to dangerous levels, with a viral post highlighting how opening a door instantly pushed indoor air quality from a 'poor' 100 AQI to a 'severe' 500, despite four purifiers running. The city's overall AQI reached 386, with many areas reporting 'severe' pollution due to stagnant winds, making life unbearable for residents.

Source: Watch: Delhi man opens door, indoor AQI jumps from 97 to 500 in seconds- viral video