Experts state that Mumbai’s AQI has improved due to the impact of ‘wind reversal’. The AQI readings by the System of Air Quality and Weather Forecasting and Research (SAFAR) and Central Pollution Control Board’s SAMEER app on Monday evening were 140, classified as “moderate.”

The city’s AQI had been deteriorating due to slow winds and the retention of moisture-retaining pollutants in the air. Over the past week, overall AQI readings in 
Mumbai consistently exceeded 170 and 180. However, owing to increased wind speed and reduced moisture content, Monday’s AQI dropped below 150.