You and your community can also keep ozone levels low by doing simple everyday things to reduce pollution. The people, plants, and animals who need clean air to breathe will appreciate your help to keep ground-level ozone under control. The BIG three Cars, factories, boats, lawn mowers, paint cans, and other household products emit pollutants. Ground-level ozone forms when those pollutants bake in the hot summer sun. Because ground-level ozone is formed by combining these pollutants, it is called a secondary pollutant.
Ozone is made up of three oxygen atoms.
Because ozone has three oxygen atoms, it is unstable and can react with things, damaging rubber, plants, and EVEN your lungs. THAT S the big deal. NOx stands for a group of chemical compounds called nitrogen oxides. These chemicals are made up of nitrogen and oxygen. They are created mostly by cars and other engines powered by gasoline, like lawn mowers and motorboats.