11:01, 23 June 2026
Words by Cheyanne Bryan, Editorial and Campaign Marketing Executive, London
The UK is currently experiencing an intense heatwave driven by a heat dome over Western Europe, trapping hot air and pushing temperatures well above seasonal averages.
Before heading outdoors, it is important to understand the difference between heat exhaustion and heatstroke. According to the NHS guidance on heat exhaustion and heatstroke, heat exhaustion is usually not serious if the person can be cooled down within 30 minutes. However, if it progresses to heatstroke, it becomes a medical emergency requiring immediate treatment and a 999 call.
According to St John Ambulance's heat exhaustion first aid advice, if someone is showing signs of heat exhaustion you should:
St John Ambulance advises seeking medical advice if symptoms persist and calling 999 if you are concerned or suspect heatstroke. The first aid response to heatstroke is largely the same as heat exhaustion, just with more urgency.
While it’s important to look after others, it’s also equally as important to keep yourself safe from heat illnesses. Research shows preventing heat illness is far easier than treating it. Incorporate these proactive daily measures:
During periods of extreme heat, a simple welfare check on a neighbour, friend or relative can make a significant difference. Ensuring vulnerable people have access to drinking water, a cool environment and support if they become unwell can help prevent serious illness. Certain medications such as antidepressants can increase your vulnerability to dehydration, heat exhaustion, and heatstroke
As temperatures continue to rise across the UK and Europe, following advice from the NHS and St John Ambulance can help keep you and those around you safe. If you have a pet, please also follow the advice here, to keep them safe and cool.
At Smiley Movement, we like to elevate the work of charities across the world. Here are three charities whose causes align with the themes in this article.
St. John Ambulance. This UK charity helps communities stay safe by delivering first aid training, emergency response services and public health education. Learn more here.
Rainbow Railroad. This US-based humanitarian organisation supports people affected by disasters and emergencies, including dangerous heatwaves. Through cooling centres, emergency preparedness programmes and health education, the charity helps vulnerable communities stay safe during periods of extreme weather and rising temperatures. Discover their work here.
International Federation of Red Cross and Red Crescent Societies (IFRC). This global humanitarian network works in more than 190 countries to help communities prepare for and respond to climate-related emergencies. From heat action plans and public awareness campaigns to emergency medical support during extreme weather events, the IFRC helps protect millions of people from the growing risks posed by heatwaves worldwide. Find out more here.
This positive news article aligns with the UN SDG Good health and Wellbeing.