anx_I__para__5
Directive (EU) 2024/2881 of the European Parliament and of the Council of 23 October 2024 on ambient air quality and cleaner air for Europe (recast) · European Union
To be measured as an hourly average over 3 consecutive hours in the case of sulphur dioxide and nitrogen dioxide, and as a daily average over 3 consecutive days or less for PM10 and PM2,5, at locations representative of air quality over at least 100 km2 or an entire zone, whichever is the smaller.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-16 · Text as adopted (Official Journal); later amendments are not incorporated in this text.