The air quality, in general, has an important impact on the development of rural areas, and sustainable rural development. Air quality is a very important parameter both for sustainable rural development and for life on earth in general. In this context, it is interesting to analyze the correlation between sustainable rural development and the state of air quality dependent on the amount of pollutant concentration, expressed by the air quality index SAQI_11. The main attention in the research was focused on the analysis of the numerical values of pollutants concentrations, for the period of averaging-24h and the calendar year, in accordance with the classes of the Air Quality Index SAQI_11, and the analysis of the air quality trend by zones and agglomerations for the period 2012-2015. Conclusions on air quality, SAQI_11 air quality index classes, and on correlation with sustainable rural development were carried out for agglomerations "