London Issues High Air Pollution Alert, Warns of Health Risks

City Hall in London has issued a 'high' air pollution alert due to increased pollution levels from mainland Europe, compounded by local sources and light winds, posing health risks to vulnerable populations. The alert was triggered by forecasters from Imperial College London, who predict that the combined pollutants may lead to elevated particulate levels. Deputy Mayor for Environment and Energy, Mete Coban, highlighted the serious implications of London's air quality, which is linked to around 4,000 premature deaths each year. He urged residents to take precautionary measures, such as turning off idling engines and avoiding burning wood or garden waste. Alerts are communicated through various channels, including public transport displays, to ensure residents can make informed decisions about outdoor activities. This high pollution warning coincides with expected warm temperatures, making it the hottest day of the year so far in London.