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Ground-level Ozone Pollution

Announcements

9/20/24 - EPA releases proceedings for May 2024 workshop to inform the review of the Ozone National Ambient Air Quality Standards.

8/21/2023 - EPA Initiates New Review of the Ozone National Ambient Air Quality Standards to Reflect the Latest Science

Ground-level Ozone Basics

Setting and Reviewing the Standards

Implementing the Standards

Air Quality Where You Live

View current and forecasted air quality conditions across the U.S.
Explore current locations of wildfires
Review data from air quality monitors across the world

Visit AirNow.gov

Note: AirNow is experiencing extremely heavy traffic and may be slow. Visit an alternate map showing air quality from fires.