'Calm surface winds, shallow to moderate fog and low mixing depths are preventing effective dispersion of pollutants ... With calm winds, low mixing height, and winter inversion trapping pollutants close ...
Monday’s brief improvement was driven by winds picking up to around 12 km/hr during the day ... “Wind speed is dipping in Delhi again ... News / Cities / Delhi / Calm winds push Delhi’s AQI back up to 374; ‘very poor’ stretch to continue.