Map of Days Over the National Ambient Air Quality Stated for Ozone (2011)


The map of today shows ozone days over the National Ambient Air Quality in the United States in 2011. From the map we can see the most polluted clustered areas are: California and Arizona; Oklahoma, southeast Kansas, east Texas and south Louisiana; Michigan, Ohio, Indiana and Illinois; The northeastern coastal states.

Why do you think ozone pollution is particularly bad in these areas?

For more information and other Map of the Days, please check out: