The Maine Department of Environmental Protection has issued an air-quality alert for Saturday, saying ozone concentrations will be at unhealthy levels from Kittery to Acadia.
Winds are expected to carry unhealthy ozone levels that have been present in southern New England this week toward Maine after midnight, according to a news release from the DEP.
That means children, adults who exert themselves and people with respiratory diseases, such as asthma or bronchitis, may experience shortness of breath, coughing, throat irritation or an uncomfortable feeling in the chest.
Avoiding strenuous outdoor activity during the afternoon could help prevent those symptoms, the DEP said.
The agency also expects ozone levels to be moderate in western Maine and particle pollution to be moderate up the coast to Acadia and in the western part of the state.
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