MeteoLux and Luxembourg's Ministry for Sustainable Development and Infrastructure have issued an ozone warning for across the Grand Duchy.

Today, Tuesday 8 May 2018, the warning applies from midday to midnight, and tomorrow Wednesday 9 May 2018, also from midday to midnight.

During those times, ozone levels may exceed the threshold of 160 μg / m³. Various temporary restrictions may be put in place, including 90 km/h speed limits on the country's motorways.