An Introduction to Air Quality

Concawe factsheet on Air Quality. Background to Air Quality Air quality is influenced by a variety of factors and is a complex issue. The term air quality refers to the degree to which the air in a particular place is free from pollutants. Air pollutants are substances present in the atmosphere at concentrations above their normal background levels which can have a measurable effect on humans, animals and vegetation. You can download the English fact sheet HERE.

The facts sheets have also been translated to other European languages, and you can download them below. More translations will be added once they are completed. Read other documents related to Air Quality here:

• An Introduction to Urban Air Quality
• An Introduction to Passenger Car Emissions and Test Cycles
• European Air Quality Trends for NO2 and PM
• Real driving emissions of Euro6 diesel passenger cars and their impact on urban air quality