2025-07-10 00:00:00 Review of data on allergen pollen concentrations in the state network of stations in the Republic of Serbia. Concentrations of 26 types of allergenic pollen in the air are monitored at 25 measuring points within the national pollen monitoring network, in the period from the beginning of February to the end of October, while pollination lasts in our climatic conditions. Important Note: If you are using the Android 8 operating system, the application will not be able to start. Uninstall it and go to https://xeco.info/xeco/polen in your Chrome browser. The "Install" button will appear at the bottom. Now you have the xEco Pollen icon again. Similarly, with newer Xiaomi phones that have a hidden navigation menu, access to the app is blocked in full screen mode. Reinstall the application as described above.