Environment Canada has issued a heat warning for Chatham-Kent and Rondeau Park, with dangerously hot and humid weather expected to begin Saturday afternoon and persist through much of the coming week.
Forecasters say this marks the first significant heat event of the season.
Daytime highs will reach between 31 and 36 C, with humidex values climbing to 40 to 45. Overnight lows are forecast to remain uncomfortably warm, ranging from 21 to 25 C, offering little relief from the oppressive heat.
Officials are urging residents to take precautions, as extreme heat can affect everyone’s health. Vulnerable populations, including older adults and those living alone, are especially at risk.
Environment Canada advises checking on at-risk individuals frequently and watching for early signs of heat-related illness such as dizziness, nausea, and fatigue. Heat stroke is a medical emergency, and symptoms such as confusion or unconsciousness require immediate attention.
Residents are encouraged to plan outdoor activities during cooler parts of the day, wear light clothing, and avoid direct sun exposure. Authorities also remind the public never to leave children, pets or anyone unattended in parked vehicles.
The public is asked to monitor Environment Canada alerts and forecasts. Severe weather reports can be submitted via email to ONstorm@ec.gc.ca or on X using #ONStorm.
Chatham-Kent officials are also reminding residents that indoor temperatures can become dangerously high during a prolonged heat wave, particularly in homes without air conditioning. People are advised to stay hydrated, limit outdoor activity during peak sun hours, and wear lightweight, loose-fitting clothing.
Municipal centres and libraries across Chatham-Kent are available as cooling spaces during this heat event. More information, including operating hours, is available on the municipality’s website.
Anyone experiencing homelessness or lacking access to water or shelter is encouraged to contact the 24-hour Homeless Response Line at 519-354-6628 for assistance.
Residents are asked to check in regularly with neighbours, friends, and family—especially those at risk—to help ensure community safety throughout the duration of the warning.
