Article 15

1. The alert thresholds for concentrations of sulphur dioxide, nitrogen dioxide, particulate matter (PM10 and PM2,5) and ozone in ambient air shall be those laid down in Section 4, Point A, of Annex I. 2. The information thresholds for concentrations of sulphur dioxide, nitrogen dioxide, particulate matter (PM10 and PM2,5) and ozone shall be those laid down in Section 4, Point B, of Annex I. 3. Where any alert threshold laid down in Section 4, Point A, of Annex I is exceeded, or, where appropriate, if it is predicted to be exceeded based on modelling applications or other forecasting tools, Member States shall, where applicable, implement without undue delay the emergency measures indicated in the short-term action plans established pursuant to Article 20. 4. Where any alert threshold or any information threshold laid down in Section 4 of Annex I is exceeded, or, where appropriate, if it is predicted to be exceeded based on modelling applications or other forecasting tools, Member States shall take the necessary steps to inform the public within the shortest possible timeframe and as far as possible within a few hours, in accordance with points 2 and 3 of Annex X, making use of different media and communication channels and ensuring broad public access. 5. Member States may maintain or introduce more stringent protective measures, including alert thresholds or information thresholds that are more stringent than those referred to in this Article, in accordance with Article 193 TFEU. Member States shall notify such measures to the Commission within 3 months of their adoption.

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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.