This map shows the current status of air quality in the Netherlands. This information is updated every hour. The air quality index is the result of a calculation method. This index consists of a weighting of three substances (all three calculated and calibrated against measurements). The substances are: particulate matter (PM10), ozone (O3) and nitrogen dioxide (NO2). The information on this has been bundled and this leads to one number, between 1 (little air pollution) and 11 (much air pollution). To present the whole more clearly, color codes have also been added (blue, yellow, orange and red). These classifications are based on knowledge about the health effects of these substances. The index was developed by RIVM. The GGDs requested clear air quality information. In addition, there was a need for understandable advice for action if the air quality leaves something to be desired.
