@korina said in Air quality data of Quito Ecuador:

if you are in the mountains, the pollution will be significantly lower

Yes indeed, unless you are in a big city located in altitude but in a basin which is the case of Quito. The topography concentrates the pollution without wind and HP subsidence.
In fact what seemed strange to me at first is that the 7 stations in Quito all display 500, but looking at the detail of each one shows differences depending on the pollutants.