The application xEco Air (“eXtreme ECOlogy” - Extreme Ecology) presents the European Air Quality Index in the Republic of Serbia using data on concentrations of five pollutants: suspended particles up to 10 and 2.5 microns in diameter (PM10 and PM2.5), sulfur dioxide (SO2), nitrogen dioxide (NO2) and ground-level ozone (O3).

Measurements aggregated at the hourly and twenty-four-hour level from automatic air quality monitoring networks (taken from the national open data portal) as well as indicative measurements of PM10 and PM2.5 concentrations of suspended particles from publicly available real-time air quality databases are presented.