What is Air Quality
Good air quality is critical for maintaining life on Earth. But what is air quality and why does it change?
Smokestacks add pollutants to the air, seen during sunset.
Air is a mixture of naturally occurring gases and human-made air pollutants. Learn more about these gases and the role they play in our atmosphere.
Air Pollution: How We're Changing the Air
Learn about the six main types of human-made air pollutants and their sources.
Effects of Air Pollution
Air pollution affects all things. It is harmful to our health, and it impacts the environment. Greenhouse gas pollution affects the entire planet.
Air Pollution Solutions
While air pollution is a serious problem, it is a problem that we can solve! Lean about actions people can take to reduce emissions and improve air quality.
Air quality and climate change
Air pollutants have an impact on our planet's climate. Some pollutants cause the climate to warm, while others cause a temporary cooling effect.
How weather affects air quality
How is air pollution affected by weather? Some types of pollution are worse in the summer heat, while others are worse in cold winter weather.
Air Quality image gallery

Images and diagrams of air pollution sources, air quality effects, and more.

air quality games and simulations
Test your knowledge with one of our games or gain a deeper understanding of air quality through a simulation.
Air Quality Activities
Explore air pollution with activities aimed at helping students understand how ground-level ozone and other pollutants form and how they impact our health.