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Ozone - O[sub]3[/sub]

  Fact file Ozone is a very reactive and unstable compound, composed of three oxygen atoms (the oxygen molecule only has two) and with a characteristic odour. It is...

Nitrogen oxides - NO[sub]x[/sub]

  Fact file Nitrogen oxides (NOx) are made up of a mixture of nitric oxide (NO) and nitrogen dioxide (NO2). They are produced during combustion phenomena by the...

Carbon monoxide - CO

  Fact file Carbon monoxide (CO) is a colourless, odourless gas. It is produced during the incomplete combustion of materials containing carbon, an intermediate stage...

Sulphur dioxide - SO[sub]2[/sub]

  Fact file Sulphur dioxide (SO2) is a colourless gas that is very soluble in water and has an acidic character. With a pungent odour, it is irritating to the...

Black carbon - BC

  Fact file Black carbon (“black carbon” in English, sometimes also called soot carbon) is the carbon part of fine particles resulting from incomplete combustion. It is...

  1. Acid rain
  2. Sedimentable dust
  3. Fluorine
  4. Polycyclic aromatic hydrocarbons

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Air Quality monitoring networks in Wallonia - Annual reports Air Quality monitoring networks in Wallonia - Annual reports

Below, the  annual activity report of the Air Quality monitoring networks in Wallonia in PDF...

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Report on Air Quality in the area of Liège Airport Report on Air Quality in the area of Liège Airport

Below are the annual reports (only in french) in PDF version concerning the monitoring of the...

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Report on Air Quality in the area of Charleroi Airport Report on Air Quality in the area of Charleroi Airport

Below are the annual and/or half-year reports (only available in french) in PDF version concerning the...

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Report on Air Quality in the municipality of Rixensart Report on Air Quality in the municipality of Rixensart

Since 23 February 2022, an ambient air quality measurement station has been installed in the...

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Who are we ?

« The Walloon Air and Climate Agency (AwAC) and the Air Quality Unit of the Scientific Institute of Public Service (ISSeP) manage the ambient air quality monitoring networks in Wallonia but are also active in the realization of innovative projects concerning this environmental theme...»

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The air you breathe
in Wallonia

The air you breathe
in Wallonia

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The ambient air quality index in Walloon cities

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All pollutants measured by ambient air quality monitoring networks