Ground-level ozone concentrations are expected to reach unhealthy levels along the entire coast of Maine . The high levels will continue into Thursday and likely move inland.
In addition to the heat and humidity, several pollutant levels will be on the rise; these factors combined create a more severe situation. For more info http://www.maine.gov/tools/whatsnew/index.php?topic=Citizen+Alert+System&v=Article-2004
