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Vergangenheit Jahresmittelwerte NO2

All data below are the result of the RIO interpolation technique, in which the measurement observations are interpolated to a 4x4 km² grid resolution. Locally, concentrations can be higher or lower.

The European annual limit value for protection of human health is 40 μg/m³. The highest annual means are measured in the urban areas. This is not surprising due to the highly transport-related character of NO2. Annual mean concentrations above 40 μg/m³ were measured at sites in Antwerp and Brussels. The average across Belgium, taking account of the number of inhabitants per grid cell (population-weighted average) exceeds the non-population-weighted average across Belgium, which indicates that the grid cells with the highest population numbers are also those with higher NO2 annual mean concentrations, namely the urban areas