EKONERG develops and implements information systems for air quality monitoring. Air quality data are stored on the servers of the owners of measurement stations or on the servers of the authorized bodies. They are available to the public on the website. Some measurement stations are connected to the local alert systems for critical levels of pollution. Some examples of such complex information systems are urban national network in Zagreb, Rijeka, Sisak, Kutina and Osijek, and web applications of the local network for air quality monitoring made for the Croatian Environment Agency.