London’s mayor issues a high air pollution alert for Tuesday after dense fog and light winds trap pollution and delays travel conditions. Multiple outlets say Sadiq Khan warns residents, especially vulnerable people, to take precautions and follow guidance from forecasters.

Several reports link the pollution rise to emissions from weekend Bonfire Night and Diwali fireworks, along with wood burning. Some outlets mention City Hall advice to reduce exposure by using public transport, walking or cycling where possible, avoiding busy roads, and limiting driving. Others add specific steps such as not burning garden waste and avoiding unnecessary wood burners or open fires.

The accounts differ in emphasis and detail. The BBC focuses on the immediate impact, telling hospitals and schools to prepare. The Evening Standard cites advice from forecasters at Imperial College London. The Independent highlights the risk to travel and driving. The Guardian expands the picture beyond London, describing “very high” and “high” particulate levels across England and referring to government monitoring. Times of India and Metro foreground health impacts and pollutant measurements, including references to PM2.5 and “toxic” air framing.