Humidex values around 43 degrees tomorrow.
A special weather statement is in effect for Niagara.
Environment Canada says hot and humid conditions are in the forecast for tomorrow.
The daytime high will be between 31 to 33 degrees, with humidex values around 42 to 43.
The overnight low tomorrow will be in the low 20s, providing little relief from the heat.
A cold front is expected on Thursday.
You're advised to drink plenty of water, and check on elder friends, family and neighbours.
Residents are also being reminded to never leave people or pets inside parked cars.
Gov't Wastes Too Much Money: Candidate
Gov't Pressured to Investigate Whale Deaths
Niagara Falls Receives Payment for Casinos
Niagara Falls Man Charged with Child Porn
Toronto Man Charged with Drug Trafficking
Respecting Taxpayers, Douglas Memorial Candidate's Concerns
5 Teens Charged with Threatening Couple
Niagara Region Working to Help Business