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.
Get information about wildfires, volcanic emissions (releases), and other events that can affect our air quality.
Helpful resources about air quality for public health professionals.
Learn how ground-level ozone can harm your health — and what you can do to protect yourself.
Read about the negative health effects of particle pollution — and find steps you can take to prevent them.
Find information on public health issues related to air quality, including asthma, heart disease and stroke, and more.