Pollution

Air Quality, and other Pollution Data
(Emissions, Concentrations, Standards etc.)

• Air Pollution Research Database (APRED) 
• Air Quality Information Home Page (UK archive)
• Smoke & Sulphur Dioxide Monitoring Networks
• Nitrogen Dioxide Diffusion Tube Network
• Data can be found for England & Wales from the Environment Agency and from the site of Friends of the Earth -i

Weather reports and forecasts (Useful in interpreting air quality)

• Weather.com