This dataset contains the average of the observations generated by the network of environmental air quality observation processes of the city of Santiago de Compostela during the last hour. The network was installed by the TRAFAIR project, funded by the Innovation and Networks Executive Agency (INEA) of the European Commission (EC), through its Connecting Europe Facility (CEF) program. The dataset contains one record for each air quality observation feature, i.e., each location where air quality is observed. Each such record includes metadata of the feature itself, the average of the observed values and respective time instant. The metadata of the feature consists of identifiers, textual descriptions, and its geographic location. For each pollutant, the record contains the average of the concentration during the last hour measured in micrograms per cubic meter (ug/m3). The following pollutants are observed: carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO2) and ozone (O3). A coverage measure provides the percentage of data available to calculate the average, with respect to the total expected for the whole hour. The dataset is updated every 10 minutes.
