Using data from satellite sensors such as Tropomi on Sentinel-5P and GOME-2 on MetOp along with forecast models, this animation shows concentrations of near-surface ozone every hour over Europe throughout June 2018. It shows a typical summer month with several instances of heavy pollution, for example over the Netherlands and Germany on 7 June. Concentrations often exceed 120 μg/m3, which exceeds the eight-hourly mean limit of European air-quality standards.

The Copernicus Sentinel-4 mission, an ultraviolet, visible, near-infrared light spectrometer carried on the Meteosat Third Generation Sounder satellite in geostationary, provides hourly observations to monitor air quality over Europe. These hourly observations are set to make a breakthrough for air quality monitoring from space.