Heatwave in Belgium: Ozone and Heat Plan Activated
The Risk Management Group (RMG) officially activated the alert phase of the "Ozone and Heat Plan" this Tuesday, June 23, 2026. This decision concerns the entire Belgian territory. It is taken when weather forecasts announce very high temperatures and an increase in ozone pollution in the air.
This plan is triggered when temperatures exceed certain thresholds for several consecutive days. Ozone is a gas that can become irritating to the lungs and eyes, especially when it is very hot and there is little wind. Belgian authorities are therefore monitoring the situation closely to limit risks to public health.
During this alert period, it is strongly advised to follow simple precautionary rules. Experts recommend drinking water regularly, even without feeling thirsty. It is also preferable to stay indoors during the hottest hours of the day, generally between 11 a.m. and 6 p.m., and to keep windows closed to maintain coolness.
Vulnerable people, such as children, the elderly, and those suffering from respiratory problems, must be particularly attentive. Nursing homes and home care services are strengthening their monitoring to prevent heat-related accidents. It is also important to check on neighbors or relatives who live alone.
Finally, it is recommended to avoid intense physical effort outdoors, such as sports or heavy work, as this fatigues the heart and lungs. The alert phase will remain in effect as long as weather conditions do not improve. Citizens can consult the official website of the FPS Public Health for additional advice and to follow the evolution of the situation.