Luxembourg's weather portal, MeteoLux, has issued a nationwide yellow warning in relation to air quality on Wednesday 15 February 2023.

The warning refers to fine particulate matter (a common air pollutant), which risks exceeding the alert threshold for PM10 (> 50 µg/m³ for at least two days). These fine particles can pose a threat to people's health if levels in the air are high.

This warning remains in place across the country all day on Wednesday (until midnight).