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Extreme Heat

During the summer months, extreme heat can pose severe health risks. The municipality of Kawartha Lakes is committed to ensuring that all residents and visitors stay safe from the effects of extreme heat. If there is an emergency, the Kawartha Lakes Paramedic Service will be there to help. However, the best way to ensure everyone's safety is to take precautions and learn more about heat management in Kawartha Lakes.

Current Heat Alert:

No Active Heat warning badge logo









What are the different Heat Alerts?

Please note that heat warnings will always be shared 12 to 18 hours in advance of the Heat Event.


No Active Heat Warning

No active heat warning badge logoThe temperature is under 31°C during the day and under 20°C (night) at night. Or, a Humidex is under 40°.

 Heat Warning

Heat warning badge logo

The temperature reaches 31°C or higher during the day, and is 20°C or higher at night for at least 2 days. Or a Humidex of 40°C or higher for at least 2 days.

 Extended Heat Warning

Extended heat warning

The temperature reaches 31°C or higher during the day, and is 20°C or higher at night for at least 3 days. Or a Humidex of 40°C or higher for at least 3 days.


Ministry of Health has determined a heat emergency from reports of heat related illness or co-existed community emergency such as power outage

Important Information about Heat Events

Signs and Symptoms of Heat Exhaustion and Stroke

Heat symptoms

 How to Treat Heat Stroke and Heat Exhaustion

Kawartha Lakes Paramedic Service offers the below tips to help you protect yourself and others:

Heat Exhaustion

  • Move into the shade or an air-conditioned space;
  • Loosen clothing or remove as much clothing as possible;
  • Drink cool water or non-alcoholic, non-caffeinated beverages like sports drinks to help restore electrolyte balance;
  • Take a cool shower or sponge bath;
  • Spray cool water on yourself and sit in front of a fan;
  • Massage or stretch cramping muscles;
  • Monitor your temperature for changes in your condition that suggest heat stroke; and
  • Seek emergency treatment or call 911 if attempts to decrease body temperature fail or if you experience chest pain, abdominal pain, persistent vomiting so that you can't keep down fluids, or if you develop any of the symptoms of heat stroke.

Heat Stroke

Heat stroke is an emergency situation in which the body loses its ability to cool itself. The internal body temperature rises to extremes, sometimes as high as 106 degrees Fahrenheit. Heat stroke can result in death if not treated promptly. If body temperatures aren't reduced, symptoms can progress to:

  • Confusion, irritability, disorientation, or hallucinations;
  • Seizures;
  • Loss of consciousness and coma; and
  • Death.

If you or someone you know is experiencing heat stroke call 911 right away, or go to the closest emergency room. While waiting for emergency services to arrive, you should:

  • Move the person into the shade or into air conditioning;
  • Elevate their feet higher than their head to reduce the chance of shock;
  • Remove clothing and attempt to cool them down by wrapping them in a cool, wet sheet or spraying them with cool water and fanning them;
  • Put ice packs or cold compresses under their arms, on their groin area, and behind their neck;
  • Give them cool drinks only if they are not disoriented and not vomiting; and
  • Stay with them until Paramedics arrive.

Vulnerable Populations

Analysis of morbidity and mortality data from previous extreme heat events reveals that the following population groups are more vulnerable due to underlying risk factors:

• older adults
• infants and young children
• people with chronic illnesses (e.g. psychiatric illnesses) or who are physically impaired
• people taking certain medications that affect heat sensitivity by interfering with the body’s cooling functions or water/salt retention (e.g. antihypertensives, antidepressants, antipsychotics, anti-Parkinson’s agents)
• socially disadvantaged individuals (e.g. low-income earners, homeless people, people living alone
• newcomers to Canada and transient populations (e.g. tourists)
• certain occupational groups (e.g. farmers, construction workers, miners, tree planters)
• those who are physically active

Early summer extreme heat events generally result in higher health impacts than those occurring later in the summer. Most people who are regularly exposed to high temperatures become acclimatized to hot environments. However, the body’s ability to acclimatize may be limited for some people, such as those with heart disease, older adults and young children. Acclimatization is due to physiological adaptation in both cardiovascular and sweating systems. The benefits of acclimatization lessen as a person’s exposure to high temperatures decreases.

 Other heat related illnesses

Heat Rash
  • Heat rash is a skin irritation caused by excessive sweating during hot, humid weather
  • Looks like a red cluster of pimples or small blisters
  • It often appears on the neck, groin or armpits

Heat Cramps

  • Heat cramps are caused when sweating depletes the body’s salt and moisture levels
  • Low salt levels in muscles causes painful cramps

Municipal Locations Available to Help Beat the Heat

For those who may not have air conditioning and are looking for a place to cool off, the municipality offers the following to help you beat the heat:

Cooling centres (available during extended heat warnings only)

Cooling centres are available to residents during extended heat warnings at the following locations and times. Access to washrooms, water, seating and air conditioning will be available.

  • Lindsay Recreation Complex
    Monday to Friday 8:30am to 4:30pm
    Saturday and Sunday 11am to 5pm
  • Coboconk Public Library and Municipal Service Centre
    9 Grandy Road, Coboconk, ON K0M 1K0  
    Monday, Tuesday, Wednesday and Friday: 8:30am to 4:30pm 
    Thursday: 8:30am to 6pm 
    Saturday: 10am to 2pm

In addition, check your local public library branch hours for a place to go to cool down. 

Never Leave Children or Pets in a Locked Vehicle

Never leave children or pets inside a locked vehicle.
When the outside air temperature is 23 degrees Celsius (73 degrees Fahrenheit), the inside of a vehicle can be more than 50 degrees Celsius (122 degrees Fahrenheit).

Know the Weather

Always stay informed about the weather and any possible heat events by subscribing to our newsroom, checking this webpage frequently and looking at your local weather.

Other Tips and Tricks

  • Never leave children or pets alone in a closed or parked vehicle
  • Stay hydrated by drinking lots of water even if you don’t feel thirsty
  • Avoid going out in the heat and stay in the shade as much as possible
  • Check in regularly with vulnerable family members, neighbours, friends and others who could be affected by the extreme heat
  • Take frequent breaks if you work outdoors
  • Avoid wearing dark colours because they absorb the sun’s rays
  • Avoid strenuous exercise or physical activity during the hottest part of the day

Tips to keep your body cooler during heat exposure:

  • Drink fluids regularly
  • Move around and avoid standing in one place for too long
  • Wear a hat and light summer clothing protects from sun exposure
  • Take breaks in the shade
  • Protect yourself against sunburn – apply sunscreen!
  • Avoid heavy meals mid-day



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