The Pollumeter of the Brussels Capital Region follows
the evolution of the air quality. The overall index is calculated on the basis
of measurements at all places for oxygen (O3), nitrogen dioxide (NO2), sulfur
dioxide (SO2) and particulate matter (PM10): www.ibgebim.be/Pollumetre/dynamic_index.txt.
Bruxelles Environnement - Leefmilieu Brussel requests
to periodically retrieve the data (at 35 past the hour), and not to search each
time at a web page with the Pollumeter.