Every morning the European Union publishes a 48-hour air quality forecast for the whole continent: five pollutants, one value every hour, on a grid of about 300,000 cells of roughly 10 km. It is free and open, produced by the Copernicus Atmosphere Monitoring Service (CAMS). It is also a 275 MB ...
Source: [Dev.to](https://dev.to/marco_pavanelli/serving-europe-wide-air-quality-forecasts-from-a-parquet-file-on-a-bucket-287o)