Warning phase of ozone and heat plan activated

    The warning phase is activated when the sum of the difference between the predicted maximum temperature in Uccle and 25°C over a five-day period exceeds 17°C. Normal ozone concentrations for the time of year are expected in the coming days.

    Exceedances of the European information threshold of 180 µg/m³ are not predicted. From Wednesday, the combination of air pollution, high temperatures and sunny weather could increase concentrations