Air Quality tells us how good the air is to breathe. If the air quality is bad then it has more harmful things in it. Good air quality tells us that it has less harmful things and is better for us to breathe.
Air is all around us; it is what is known as a gas. Air contains oxygen which is essential for our bodies to live.
Air pollution describes harmful things in the air we breathe. When we get poor air quality it is because levels of some gases have reached harmful levels. These gases are harmful to humans and animals and plants. The gases which affect our air quality are:
Air is also polluted by Carbon Dioxide, Methane, CFC's and Ozone. Some of these are causing the earth to warm up - known as Global Warming.