European Air Quality Index (hourly measures) — O3 sub-index

- European Air Quality Index (based on pollutant concentrations in µg/m³): hourly measurements for the pollutant O3 for the most recent time for each station - The O3 sub-index is available according to the type of stations (industrial, bottom or traffic) in accordance with the methodology for calculating the European air quality index by measuring stations throughout the Greater Region - Depth of data: The most recent subtly of the last 3 hours for each station is available every hour. If the calculation of the sub-index is not possible due to lack of data its value marked by a grey pellet in the symbology of the map (data not available) - Data sources: Atmo Grand Est; Agence Wallonne de l’Air et du Climat — AWAC; Landesamt für Umwelt- und Arbeitsschutz Saarland — IMMESA; Landesamt für Umwelt Rheinland-Pfalz — Zimen; Environmental Administration Luxembourg. Harmonisation: Atmo Grand Est and SIG-GR 2020