Air quality still poor this Sunday in Lyon

Hôtel Dieu of Lyon @Hugo LAUBEPIN
Air quality remains poor this Sunday, May 18 in Lyon, due in particular to light winds and particularly clear skies.
With particularly clear skies and weakening winds, air quality remains poor this Sunday, May 18, in Lyon, as was already the case yesterday. The roads around Lyon may experience pollution peaks during the day, which could result in "poor" or even "very poor" air quality.
The Atmo Auvergne-Rhône-Alpes website indicates that these climatic conditions "cause an increase in ozone concentrations. However, the ATMO "bad" threshold has not been reached, and air quality is therefore degraded throughout the region."
Lyon Capitale