Diwali firecrackers triggered overnight pollution spikes in Mumbai, with Navy Nagar recording an AQI of 497 and several areas crossing 400. Air quality across several Indian cities has plummeted following Diwali celebrations, with Delhi facing severe AQI levels. Actor Bhumi Pednekar has joined the chorus of concern as emergency. Bhumi Pednekar flags hazardous AQI and post-Diwali pollution, warning about the risks firecrackers pose to children, older people and animals.