Pollution in Lyon: improvement this Monday with the arrival of storms
Air quality in Lyon and the entire Lyon metropolitan area is expected to improve this Monday, May 19, 2025, with the return of thunderstorms to the region.
After a spring-like and largely sunny week in Lyon, thunderstorms returned to the region this Monday. These weather conditions should reduce pollutant concentrations in the Lyon region.
Thus, the Atmo index in Lyon will remain average to degraded, with ozone present in large quantities in the Lyon sky this Monday.
Lyon Capitale
