Heat warning issued for Hamilton, with humidex values of 35 to 40 expected for several days

A heat warning is in effect for Hamilton, with humid weather expected to blanket the city for a week.

Environment Canada says daytime temperatures are predicted to reach near 29 to 32 C, with humidex values expected to be 35 to 40 beginning Friday and lasting possibly until Thursday.

"This week southern Ontario will experience hot and humid conditions. The temperatures and humidex will meet or be extremely close to heat warning criteria, with the hottest day being Saturday. A shift in the weather pattern on Thursday will likely end this multi-day period of heat and humidity," the weather agency said.

Environment Canada is urging people to take action to protect themselves and others.

"Determine if you or others around you are at greater risk of heat illness. Check on older adults, those living alone and other at-risk people in-person or on the phone, multiple times a day," the agency said.

"Watch for the early signs of heat exhaustion in yourself and others. Signs may include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water."

City offering 'cool places' 

Meanwhile, the City of Hamilton says it's partnering with community agencies to respond to the heat by offering "cool places" to go during all stages of a heat event. 

These locations can be identified by a "Cool Down Here" sign at the entrance, the city says.

As part of the heat response plan, regularly scheduled Open Swims at all City of Hamilton indoor and outdoor pools will be free of charge. 

The city says there are many spray pads, additional cool places and outdoor pools across Hamilton. 

The city has provided the following tips to reduce your risk of heat-related illness:

• Drink plenty of water. Avoid drinking alcoholic and caffeinated beverages on hot days.

• Go to an air-conditioned place. Visit a designated cool place listed on hamilton.ca/heat.

• Dress to protect from the heat. Wear lightweight, loose-fitting, light coloured clothing. Wear a hat or take an umbrella to keep your head cool and don't forget sunscreen.

• Take it easy. Limit physical activities (walking, running, gardening, etc.) during the day. If rescheduling activities to dawn or dusk when it may be cooler, protect yourself with insect repellant as mosquitoes are more active at such times. Check labels to apply.

• Cool off. Take a cool bath or shower.

• Keep your living space cool. Close your blinds or curtains. Open windows to let air circulate when using a fan.

• Never leave children or pets alone in closed vehicles. Temperatures in a car can become life-threatening within minutes.

• Check on your neighbours and family.

• Landlords can help to decrease the risk of heat-related illness for tenants.Connect with tenants to determine if units have adequate cooling. If not, provide tenants with onsite access to a cool space.