Revision of the Federal Environment Agency Air Quality Index regarding the WHO Air Quality Guideline 2021

Study objective:

Air quality indices (AQIs) are used in many regions of the world to inform the population about current and long-term air quality and to communicate health related recommendations. At present AQIs mostly refer to current values at monitoring sites, it is desirable that they also allow a classification of short-term and long-term health hazards.

The aim of the project is to revise the content of Federal Environment Agency’s existing national AQI. In particular, the new standards from the WHO Air Quality Guideline published in September 2021 are to be incorporated.

Specific objectives

  1. Research and comparison of different national and international AQI
  2. Deriving recommendations for the revision of the AQI with special consideration of the WHO Air Quality Guideline and possibly the new European Union Air Quality Directive
  3. Exemplary application of the recommendations using the air quality data of the last 2 years, evaluation of the results
  4. Presentation of the results to state representatives and experts to promote communication about air quality and assessment indices

Study design:

Structured Review

Study population:

Not relevant

Project Team Heinrich-Heine-University of Düsseldorf

  • Katherine Ogurtsova
  • Karoline Weik
  • Haeran Jeong


IVU Umwelt GmbH

External Funding

  • Federal Environment Agency (Unmweltbundsamt UBA)

Project duration:


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