Air quality deteriorates slightly in Lyon this Wednesday, April 9, 2025 with weather conditions favorable to the appearance of ozone.
We breathe less and less well this week in Lyon. This Wednesday, April 9, air quality deteriorates slightly, with weather conditions that are fairly similar to the day before but always favorable to the formation of air pollutants such as ozone.
Thus, air quality should be degraded on a large part of the Lyon agglomeration this Wednesday.