The Regional Municipality Of York

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Heat warning issued for York Region

When temperatures rise, keep cool to reduce your risk of heat-related illness

Newmarket – Environment Canada has issued a heat warning for York Region. York Region Public Health advises the public to take extra precautions to stay safe in the heat.

Everyone is at risk from extreme heat, especially older adults, infants and young children, people who work or exercise outdoors and those with certain medical conditions. Warning signs of heat-related illness include dizziness, headache, nausea or vomiting, weakness and confusion. If you experience any of these symptoms, seek immediate medical attention. Also remember to check on friends, family and neighbours who may be at risk during a heat event and after temperatures cool off.

Heat-related illnesses are preventable

Staying cool, hydrated and reducing outdoor physical activity are the best ways to beat the heat during hot and humid weather.
Find ways to stay cool

  • Stay indoors in cool, well-ventilated areas
  • Wear loose-fitting, light-coloured clothing made of breathable fabric
  • If you do not have air conditioning in your home, go to places that do, including shopping malls, local libraries, public pools and community centres
  • When using fans, keep a window or door open to bring in cooler air from outside
  • Never leave people or pets inside a parked vehicle or in direct sunlight

Drink extra fluids

  • Increase your fluid intake regardless of your activity level
  • Drink plenty of water before feeling thirsty

Reduce physical activity, especially in the full sun

  • Reschedule or plan outdoor activities during cooler parts of the day
  • Reduce sun exposure between 11 a.m. and 4 p.m. and when the UV Index is reported to reach three (moderate) or higher
  • If you must be outdoors in the heat, rest frequently to allow your body temperature to cool down
  • Avoid sun exposure by wearing a wide-brimmed, breathable hat or use an umbrella
  • Wear sunscreen with SPF of 30 or higher

Should the heat warning continue into Monday, an extended heat warning may be issued.

For more information on this heat warning, please visit, follow York Region on Twitter and Facebook or contact York Region Health Connection at 1-800-361-5653 or TTY 1-866-512-6228.

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Media Contact:
Joe Chawla, Community and Health Services
The Regional Municipality of York
Tel: 1-877-464-9675 ext. 77240
Tel: 905-806-1216

Heat warning; York Region The Regional Municipality of York en-US Media Release