Health Unit officials say heat and humidity can lead to a medical emergency if people aren't careful.
Environment Canada issued a humidex advisory for Thunder Bay as temperatures are expected to climb past 30C Tuesday afternoon. The Thunder Bay and District Health Unit’s public health nurse, Judi Marton, said as the body retains more heat when the temperature rises, it's important to keep drinking fluids to avoid dehydration.
"Don't wait until you're thirsty," she said.
Marton also advises people to stay indoors as much as possible but for those venturing outside they should wear loose clothing, take breaks in the shade frequently and always wear sunscreen.
"Your body basically will tell you most of the time," she said of conditions like heat stroke.
Symptoms of heat stroke include confusion, nausea, vomiting and fainting. Marton said heat stroke is a medical emergency and 911 should be called if anyone is showing those symptoms.
"Check on people. Especially older adults that are living alone," she said.
Seniors, infants, pets and vulnerable people such as the homeless are also at an increased risk for heat stroke Marton said.
