Siloam Mission has put out a call for help as humidex climbs.

While many people are enjoying the warm weather of the past week, it also poses challenges for the city's homeless.

Siloam Mission took to Facebook on Wednesday afternoon asking for donations of bottled water.

"The heat is very extreme," said Kathi Neal from Siloam. "What we find is that we are going through a lot of bottled water."

Neal says they would be very grateful to anyone who is able to donate.

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