London Air Quality A fully-featured AQIS provides updated AQ information, various handy tools and sophisticated visual information as well.
Sussex Air Alert Anyone who suffers respiratory disease can subscribe to this SMS service for free.
APNEE A past project (2000-4), the Air Pollution Network for Early Warning and On-line Information Exchanged in Europe (APNEE) aimed to enable users to access and exchange AQI in urban regions.
AIRNow The AIRNow website gives some basic educational materials about air quality index for various groups. It also provides health tips as well as how to avoid or reduce air pollutant effects.