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Extended Heat Warning notification for the City of Hamilton

HAMILTON, ON – The Medical Officer of Health for the City of Hamilton has initiated an Extended Heat Warning beginning on August 23, 2021. The Extended Heat Warning stays in effect until a cancellation notice is sent. Heat and humidity expected to continue today and possibly into the middle of this week. Daytime maximum temperatures: 30 to 32 degrees Celsius, with humidex values 37 to 40. Nighttime minimum temperatures: near 21 degrees Celsius. The City of Hamilton and participating community agencies are responding 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. For more information visit Signs of heat exhaustion include heavy sweating, weakness, cold, pale and clammy skin, weak pulse, fainting and vomiting. If experiencing symptoms, seek help right away – call 9-1-1 of needed. Reduce your risk of heat-related illness by following these precautions: • 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

• 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.

Additional Resources Information about the Heat Alert and Response System visit For tips on coping with the heat and places to cool off visit or call 905-546-CITY (2489). City of Hamilton Indoor and Outdoor Pool Locations and Schedules Information on how heat affects human health is available on the Health Canada website.

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