According to the latest reports, on Monday, June 13, Mumbai registered its cleanest air of the year to date with an Air Quality Index (AQI) of 28. The System of Air Quality and Weather Forecasting and Research's (SAFAR) record of 28 AQI in Mumbai is reported to be a signal of good air quality in accordance with the National Ambient Air Quality Standards (NAAQS).
Based on accounts, experts attribute the fall in pollution to favourable weather conditions that entail the recent rainfall in Mumbai as well as the strong winds.
It has been reported that SAFAR has nine air quality monitors in the city. Herein, the ones at Bandra Kurla Complex, Worli and Mazgaon registered the cleanest air in Mumbai with AQIs of 21, 23 and 26 respectively. On the other hand, on Monday, the highest AQIs were seen in Bhandup and Chembur at 55 and 53 respectively.
Narratives suggest that the lowest AQI ever registered in Mumbai since 2015 was on September 4, 2019, at 12. The various levels of AQI can reportedly be comprehended as follows:
| AQI | Category |
| Above 500 | Severe+ |
| Above 400 | Severe |
| Above 300 | Very Poor |
| Excess of 200 | Poor |
| 100 to 199 | Moderate |
| 50 to 99 | Satisfactory |
| Below 50 | Good |
Project director at SAFAR, Gufran Beig was quoted in a report by the Hindustan Times elaborating on how Monday was amongst the cleanest ever air days for the city since they commenced registering pollution levels in 2015. In addition to this, it was also the cleanest day of the year so far. He added that during monsoon, the air quality is usually better in the city.
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