Pollution in Lyon: Air quality rather good this Monday

Air quality will be fairly good in Lyon and the entire Lyon metropolitan area on Monday, July 21, 2025.
It's easy to breathe in Lyon this Monday. Despite the return of sunshine to the Lyon region, which could promote ozone formation, the sometimes strong southerly wind will once again ensure good atmospheric mixing, limiting the accumulation of primary pollutants.
Thus, the Atmo indices will once again be average to good. The concentration of ozone and multi-pollutants is classified as average, while fine particles, nitrogen dioxide, and sulfur dioxide will be present in small quantities in Lyon's air.
Lyon Capitale