Belgium, Brussels-Capital Region: Nationwide yellow heat warning remains active through Friday as authorities urge residents to stay hydrated and vigilant
Belgium has extended its nationwide yellow heat warning until and including Friday as the country continues to experience exceptionally high summer temperatures. The decision was announced by the Royal Meteorological Institute (IRM), which warned that maximum temperatures are expected to remain between 30°C and 33°C across much of the country during the week.
The yellow warning, which has been in force since 4 July, remains applicable throughout the country as meteorologists forecast persistent hot and dry weather. Health authorities have urged residents to take extra precautions to reduce the risk of heat-related illnesses, particularly during the hottest hours of the day.
The IRM stated that while most of Belgium remains under the yellow alert, the Belgian coast will temporarily return to a green alert on Monday. Cooler sea breezes are expected to provide short-lived relief for coastal communities before warmer conditions return.
From Tuesday onward, the coastal region will once again be placed under a yellow heat warning as temperatures rise further inland and along the shoreline. The institute said weather conditions are expected to remain stable, with little chance of significant rainfall capable of cooling the country.
The continuation of the yellow warning also means Belgium’s Heatwave and Ozone Peaks Plan remains in its warning phase until at least the end of the week. The national response plan is activated whenever prolonged periods of hot weather are expected to increase health risks and air pollution levels.
The Heatwave and Ozone Peaks Plan involves close cooperation between meteorological authorities, healthcare services, environmental agencies and local governments. It aims to provide timely information, coordinate emergency responses and encourage preventive measures to protect public health.
Officials have warned that temperatures reaching between 30°C and 33°C can have serious effects on vulnerable members of society. Elderly people, infants, young children, pregnant women and individuals with chronic medical conditions are considered particularly susceptible to heat-related complications.
Health experts recommend drinking plenty of water throughout the day, even before feeling thirsty. Staying hydrated helps regulate body temperature and reduces the likelihood of dehydration, heat exhaustion and heatstroke.
Authorities also advise people to avoid unnecessary outdoor activities during the afternoon, when temperatures are typically at their highest. Those who must spend time outside are encouraged to wear lightweight clothing, seek shade whenever possible and use sunscreen to protect against harmful ultraviolet radiation.
Residents are also being reminded never to leave children or pets inside parked vehicles, even for a short period. Temperatures inside cars can rise rapidly within minutes, creating life-threatening conditions.
The IRM emphasized that although a yellow warning represents a moderate level of risk, it should not be ignored. Extended exposure to high temperatures can affect anyone, particularly when hot weather continues for several consecutive days without sufficient overnight cooling.
Hospitals and healthcare providers often see an increase in patients suffering from dehydration, heat cramps and other heat-related conditions during prolonged periods of extreme weather. Medical professionals encourage individuals experiencing dizziness, nausea, severe headaches or confusion to seek medical attention immediately.
The ongoing hot weather may also contribute to elevated ozone concentrations near ground level. Ozone pollution forms when sunlight reacts with pollutants emitted by vehicles, industrial activities and other sources. High ozone levels can worsen respiratory conditions such as asthma and reduce overall air quality.
Environmental authorities continue to monitor ozone concentrations closely throughout the country. People with respiratory illnesses are advised to limit strenuous outdoor activities if air quality deteriorates further during the week.
Belgium has experienced increasingly frequent and intense heatwaves in recent years, reflecting broader climate trends observed across Europe. Scientists have noted that rising global temperatures are increasing both the frequency and duration of extreme heat events.
The growing occurrence of prolonged hot weather has prompted governments across Europe to strengthen public warning systems and improve emergency preparedness. Heatwaves are now considered among the continent’s deadliest natural hazards because of their significant impact on public health.
Municipal authorities across Belgium are encouraging residents to regularly check on elderly relatives, neighbours and individuals living alone. Community support plays a crucial role during periods of extreme heat, especially for people who may have limited mobility or access to cooling facilities.
Employers are also being reminded to implement measures that protect workers exposed to high temperatures, particularly those employed in construction, agriculture and outdoor maintenance. Providing access to drinking water, shaded rest areas and regular breaks can significantly reduce health risks.
Many schools, childcare centres and care facilities have also introduced additional measures to help keep indoor spaces cool. Staff members are monitoring hydration levels closely and adjusting outdoor activities according to weather conditions.
Although no immediate end to the hot weather is expected, meteorologists continue to monitor evolving atmospheric conditions that could bring cooler temperatures later in the week. Forecast updates will determine whether the warning needs to be extended further or gradually lifted.
The temporary improvement along the Belgian coast on Monday highlights the influence of cooler maritime air, but forecasters caution that the relief will likely be brief. Inland regions are expected to remain particularly warm throughout the warning period.
Authorities continue to stress that prevention remains the most effective way to reduce the health impacts of extreme heat. Simple measures such as drinking sufficient water, keeping homes cool by closing blinds during the day, and avoiding strenuous physical activity during peak temperatures can make a significant difference.
As Belgium remains under the nationwide yellow heat warning through Friday, officials are urging residents to remain alert, follow weather updates and prioritise their health. With temperatures expected to exceed 30°C across much of the country, public cooperation will be essential in minimizing the risks associated with the ongoing heatwave and protecting the most vulnerable members of society.