An Amber Heat-Health Alert has been called for London, from 9am Tuesday 12th August until at least 6pm on Wednesday 13th August 2025. To help yourself and your community, you can: Check in on older people & those with a health or mental health condition Use and promote our Cool Spaces map, for those who seek respite while out and about Drink plenty of water and stay hydrated Avoid being out in the sun from 11am – 3pm