Mumbai's Air Quality Index dropped to 502 on on Monday, which falls in the severe category. The overall AQI deteriorated from 180 (moderate) on Sunday morning to 333 (very poor) by evening. The worst hit was Malad, which recorded an AQI of 436.
The mercury levels in Mumbai have dropped over the past few days. IMD Santacruz observatory recorded a minimum temperature of 15.0°C on Monday morning while the Colaba observatory recorded a minimum temperature of 16.2°C.
According to reports, the temperature in Mumbai is expected to rise from Wednesday onwards.
Meanwhile, hazy, cloudy skies were reported over Mumbai, Pune, north Maharashtra and adjoining districts in Gujarat on Sunday after a dust storm originating in the Gulf area and Karachi, Pakistan, towards Rajasthan and neighbouring Gujarat, coupled with warmer temperatures in areas along the Arabian sea including Mumbai has led to sand particles entering and polluting the air.
Visibility in several places in and around Mumbai too was low on Sunday morning.
