A thick layer of smog enveloped Rashtrapati Bhavan, Samvidhan Sadan and Parliament House in New Delhi on Wednesday, as deteriorating air quality pushed pollution levels higher across the national capital. (PICS/PTI)

Mumbai’s iconic Marine Drive witnessed air pollution on Sunday, as a thick blanket of smog and haze enveloped the city, significantly reducing visibility. The air quality index (AQI) was recorded at 105 in the `moderate` category (PICS/ ASHISH RAJE)