Area Designations for 1997 and 2008 Ground-level Ozone Standards
Where You Live
Note: EPA no longer updates this information, but it may be useful as a reference or resource. For the latest information on ground level ozone designations, see www.epa.gov/ozone-designationsThe links on this page will direct you to information about ozone conditions and about ozone designations for the region, state and/or county where you live.
Area Designations for the 1997 Ground-level Ozone Standards
EPA issued these designations on April 15, 2004. They are summarized here.
Area Designations for the 2008 Ground-level Ozone Standards
EPA is in the process of determining compliance with this standard.
The status of this effort is summarized here.
Ozone Conditions
Map animation displays progressive ozone conditions for today and yesterday for most regions of the nation.
Air Quality Forecast
Air quality forecasts for today and tomorrow are presented for hundreds of American cities.