Heat breaks records in Waterloo Region for two days straight

WATERLOO REGION — The heat wave this week broke daily records for both Tuesday and Wednesday.

On Tuesday the high at the Region of Waterloo International Airport hit 34.1 C — with a humidex of 39 C. That broke a daily record of 32.7 C set in 2012.

And a second record was broken on Wednesday, when the temperature rose to 32.1 C by around 1 pm The previous record for June 22 was 31.2 C, set in 1998.

The humidex Wednesday was 37 C. The humidex combines the temperature and humidity into one number to reflect how hot, humid weather feels to the average person.

“It’s a similar situation for today,” said Geoff Coulson, Environment Canada’s warning preparedness meteorologist on Wednesday.

“So that record’s also been broken. We just don’t know by how much until the end of the day,” said Coulson.

But it’s not unheard of to see this type of heat by the second half of June, he said.

The temperature in June hits at least 34 C once every 10 years, said Frank Seglenieks, University of Waterloo’s weather station co-ordinator.

Environment Canada issued a heat warning for both Tuesday and Wednesday. Cooler temperatures were expected to arrive overnight with a forecast low of 12 C.

“Never leave people or pets inside a parked vehicle. When it’s hot, eat cool, light meals,” Wednesday’s warning said.

The heat brings more risk for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outside.

People who work outside are urged to take regular breaks in a cool place.

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