India, Nov. 10 -- A high pollution alert has been issued in London for Tuesday as dense fog caused particle pollution levels to exceed World Health Organisation (WHO) guidelines, threatening traffic disruptions and transport delays.

London Mayor Sadiq Khan said he was issuing a high air pollution alert for Tuesday (November 10) and urged everyone in the UK capital to "minimise their exposure" by following health advice. The mayor's office said that smoke from Bonfire Night and Diwali fireworks were also likely contributors to the smog.

"Please switch off engines when idling and avoid burning garden waste, which contributes to pollution," he said.

According to an official statement, high levels of particle pollution are forecast for Tue...