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How to Be Clean Air Aware
Have you ever noticed a brown haze above a city’s skyline? Had a hard time breathing on a hot day? If you have, you have experienced air pollution. There are two types of pollution: ozone and soot (particulate matter).

Ozone is a colorless, odorless gas that can be found in the air we breathe. There is good ozone and bad ozone, depending on where it is found.

- Good Ozone is found in the ozone layer, high above the Earth’s surface. It screens out the sun’s harmful ultraviolet rays.

- Bad Ozone is found near the Earth’s surface. It is formed when pollutants from our cars, power plants, and other sources bake in the sun. Ozone pollution is┬áthe worst during the summer months.

Soot (Particulate Matter)
Our air is affected year-round by soot pollution. Some particles are large or dark enough to be seen, but others are so small they can only be seen with a microscope! Soot is formed by burning wood, coal, natural gas, gasoline, and diesel fuel. Because people burn wood in their fireplaces or let their cars warm up before driving during the winter, soot pollution levels can be a problem even when it’s cold outside.

Clean Air Games
AQI Gameshow

AQI Game Show
Test your AQI knowledge in this exciting game. Do you think you can get 100%? Give it a shot! Be sure to read over the information on this site to score big in the game.

AQI Color Game AQI Color Game
Test your AQI color knowledge in this interactive game! It may be helpful to review the AQI levels on "The Problem" page.
*These games are a product of the U.S. EPA's Air Now Campaign. Visit the Air Now site.
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