An amber heat-health alert has been issued for London as forecasters predict temperatures will climb above 30C once again, weeks after the capital recorded its driest July on record. The Met Office is expecting highs of around 31C, prompting officials to upgrade a previous heat warning amid concerns that the hot spell could lead to a rise in deaths.
The alert is due to remain in force for 48 hours and covers four regions, with London expected to be among the hottest areas. Forecasters have described the incoming warm spell as the fifth heatwave of the year, adding to a summer that has already brought repeated extremes.
A previous heat-health alert was upgraded to amber after forecasters revised their predictions for the capital. Temperatures are now expected to exceed 30C, and the warning will remain in place for two days.
The upgrade reflects growing concern about the impact of prolonged high temperatures on public health. Officials have warned that the heat could increase mortality rates, especially among older people, young children and those with long-term medical conditions.
Heat-health alerts are designed to give health and social care services time to prepare before temperatures peak. The amber level indicates that the heat is expected to affect the wider population, and not just those who are most vulnerable.
Residents are being advised to stay hydrated, keep out of direct sunlight during the hottest part of the day and check on elderly or isolated neighbours. Authorities have also reminded the public that homes can become dangerously warm, and that curtains should be kept closed during the day.
The latest warning follows several other heat alerts this summer, underlining the strain that repeated hot weather is placing on London and surrounding areas. The combination of high temperatures and unusually dry conditions has raised concerns about pressure on water supplies, green spaces and emergency services.
Met Office forecasts indicate that the hottest weather is likely to be in London and the surrounding area, with temperatures possibly remaining above 30C for several hours. The warm conditions are expected to be intense enough to affect health, even for people who are normally fit and well.
Officials are asking people not to ignore the warning, even if they feel healthy, because heat can affect anyone. Simple precautions, such as avoiding strenuous exercise in the afternoon and never leaving children or pets in parked cars, can reduce the risk of serious illness.
The amber alert is expected to last for 48 hours, after which forecasters believe temperatures may ease. However, further warm spells later in the summer cannot be ruled out, and health officials say it is important to treat heat as a serious health risk rather than an inconvenience.
