Thick smog is causing concern for the residents of Delhi.
Air pollution levels reached 30 times the World Health Organization's recommended limit in some areas, reducing visibility levels drastically.
A “state of medical emergency” has been declared by the Indian Medical Association, which has also called for the city’s half marathon, to be held on the 19 November, to be cancelled.
The increasing pollution has been attributed to low wind speeds, dust from construction sites, rubbish burning in the capital and firecrackers used during festivals.