1.

Member States shall ensure that up-to-date information on ambient concentrations of sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter and lead is routinely made available to the public as well as to appropriate organisations such as environmental organisations, consumer organisations, organisations representing the interests of sensitive populations and other relevant health-care bodies by means, for example, of broadcast media, press, information screens or computer-network services. Information on ambient concentrations of sulphur dioxide, nitrogen dioxide and particulate matter shall be updated on at least a daily basis, and, in the case of hourly values for sulphur dioxide and nitrogen dioxide, wherever practicable, information shall be updated on an hourly basis. Information on ambient concentrations of lead shall be updated on a three-monthly basis. Such information shall at least indicate any exceeding of the concentrations in the limit values and alert thresholds over the averaging periods laid down in Annexes I to IV. It shall also provide a short assessment in relation to limit values and alert thresholds and appropriate information regarding effects on health.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-12 · Text as adopted (Official Journal); later amendments are not incorporated in this text.