Air Quality

Outdoor air quality has improved since the 1990s, but many challenges remain in protecting Americans from air quality problems. Ground-level ozone, the main part of smog, and particle pollution are just two of the many threats to air quality and public health in the United States.

Learn about the Air Quality Flag Program! Check out our new infographic!

A woman enjoying a breath of clean air

Air Aware

Learn more about protecting your health.

cars and pollution coming from them

Particle Pollution Course

Evidence-based, Accredited Training for Healthcare Professionals

illustration of fire and smoke.

Smoke Sense

Download the 2018 Updated Smoke Sense App

Page last reviewed: May 4, 2018