A heat health alert has been issued for London and will be in effect from 9AM on Tuesday 14 July 2026 until 9PM on Friday 17 July 2026 across London. 

The yellow alert has a matrix score of 10 . This means:

Significant impacts are possible across health and social care services due to the high temperatures, including:

• a rise in deaths, particularly among those aged 65 and over or with health conditions. There may also be impacts on younger age groups
• a likely increase in demand for health services
• internal temperatures in care settings (hospitals and care homes) may exceed the recommended threshold for clinical risk assessment
• the heat affecting the ability of the workforce to deliver services
• indoor environments overheating increasing the risk to vulnerable people living independently in community and care settings
• water-related incidents may increase, including risks from cold-water shock and drowning

You can see all the weather health alerts currently in place across England on the UKHSA data dashboard.

The  advice from public health is below:

• UKHSA usually don’t advise schools to close (Hot weather and heatwaves: guidance for schools and other education settings – The Education Hub) decisions to close schools and change school times are made locally by schools based on risk assessments that they undertake.
• School staff should consult the action card and implement measures to protect pupils and staff while they are at school
• Other adjustments that schools can/should make are included Hot weather and heatwaves: guidance for schools and other education settings – The Education Hub
• Reminder for school staff to be aware of the signs of heat-related illness and what to do if they recognise these

Please can you ensure that you advise the LA if you make any changes to your school start or end time during this hot spell.

Please do contact the Health and Safety Team or Public Health Team if you need more specific advice relevant to your individual school or setting.

You can see all the weather health alerts currently in place across England on the UKHSA data dashboard.

Schools and education settings can review the Schools and Education settings action card for more information on what actions to take.