Where to find Atmospheric data for various cities Hi im searching for atmospheric data on the following:

Air quality, Dust Particle Concentration, Pollution, Average Temperature etc


for various cities such as Frankfurt, London, Hong Kong, Bangkok...

Are there any websites that can give me this data (or similar atmospheric measurements) for each city?
Most cities used to have own pages about pollution data. But there are other sources. For example:

London: http://www.londonair.org.uk/LondonAir/Default.aspx

Bangkok: http://www.pcd.go.th/airquality/bangkok/

If you are looking for a single page, try this:

http://aqicn.org/city/all/