“Wednesday September 22, with the return of the sun, the ozone concentrations should increase slightly; increase however limited thanks to a northern flow favorable to the dispersion of pollutants still present. The indices will remain average over the region”, explains the laboratory Atmo-Auvergne-Rhône-Alpes, specialist in air quality in the region.

“Thursday 23 and Friday 24 September, meteorological conditions stabilized and will remain favorable to the production of photochemical ozone. Ozone concentrations should therefore continue to increase and average to degraded air quality indices are expected on the territory “, continues the laboratory.

Ref: https://www.lyoncapitale.fr