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In the extreme southeast of France the Alpes-Maritimes are regularly touched by ozone pollution. Pollutant emissions due to human activities and to certain natural sources are responsible for it in weather conditions convenient to their bad dispersal. This photochemical said pollution is numerically feigned by determinist models with diverse spatial scales: they take into account atmosphere chemistry and transportation of pollutants. These excessively complex tools allow us to inform the citizens the day before or two days before about the air quality of the air they are going to inhale. These models thus perform a preventive mission because certain decisions will be taken in case of peaks in pollution forecasts. This article aims to estimate the reliability of the AIRES platform, a local application of the PREV’AIR model which models the atmospheric pollution on a European scale. This validation is established by the confrontation of the model’s outputs with the data measured on the ground during very numerous itinerant ozone measurement campaigns.