The National Weather Service in Gray has issued a heat advisory for parts of Maine tomorrow, when temperatures in the 90s and high humidity will likely combine to produce heat indices that could top 100 degrees.
Meanwhile, the Maine Department of Environmental Protection is warning Mainers to expect unhealthy air quality tomorrow along the state's coast from Kittery to Acadia National Park, because of elevated ground-level ozone concentrations. It's the second unhealthy air alert for Maine this season.
The heat advisory is in effect from noon to 8 p.m. for southwest Maine and southern New Hampshire. Forecasters say the combination of high heat and humidity can cause heat-related illnesses, especially in children, the elderly and those working strenuously outdoors during the day.
They're advising people to avoid strenuous activity during the day, drink plenty of fluids, and to stay in an air conditioned room out of the sun. Those who must work outdoors should take frequent breaks in shaded or air conditioned spaces and drink plenty of water, officials say.
The Maine Center for Disease Control has also issued a heat advisory. To view the advisory, click here.