Application so that the air pollution of the city of Madrid can be seen in real time, in the different measurement stations, all located in the central area. The pollutants measured are: CO2, NO2, O3 and SO2. In addition, we will be able to access news exclusively from Madrid, updated day by day. Also, by means of graphs, the values ​​of the stations will be visualized, and a chatBot to be able to ask questions about contamination in Madrid in case of doubts.