In 2018, the average exposure of the inhabitants of the Nice Côte d'Azur metropolis to atmospheric pollution in their place of residence is comparable to that of the inhabitants of other metropolises in the Provence-Alpes-Côte d'Azur region. However, this exposure is highly contrasting: 36% of the residents live in an area where the exposure is high, and 21% in a weakly exposed area. The city center and coastal neighborhoods of Nice, which are socially less privileged, are the most exposed, unlike those in the northern part of the metropolis. Between 2012 and 2018, the population's exposure to atmospheric pollution has significantly declined in the Nice Côte d'Azur metropolis (-21%), as well as in the entire region. Within the metropolis, the decline, however, is less pronounced during this period in the less privileged areas. Since 2018, new actions have been taken in favor of ecological transition and aimed at improving air quality, leading to further reduction in the population's exposure to pollution.