Heat Warning Continues in Toronto: Extreme Heat and Humidity Persist

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Heat Warning

Prolonged Heat Event Expected Through Weekend

Toronto, ON – June 19, 2024 – Toronto remains under a heat warning as dangerously hot and humid conditions persist, with little relief expected until Friday or Saturday. Residents are urged to take precautions against heat-related illnesses during this prolonged heat event.

Current Conditions and Weather Update

As of 5:00 AM EDT, the temperature at Toronto Pearson International Airport is 23.3°C under mostly cloudy skies. The barometric pressure is 102.2 kPa and rising. The dew point is 19.8°C, contributing to a humidity level of 81%. Winds are blowing from the south at 8 km/h, and the humidex value is already at 31, indicating significant heat and humidity.

Today’s Forecast: June 19, 2024

Today, Toronto will experience a mix of sun and clouds with a risk of thunderstorms late this afternoon. Daytime highs are expected to reach 32°C, with humidex values soaring to 40. The UV index is very high at 10, emphasizing the need for sun protection.

Wardrobe Suggestions: Light, breathable clothing is essential to stay cool. A wide-brimmed hat, sunglasses, and sunscreen are recommended for sun protection. Staying hydrated and seeking shade or air-conditioned environments during peak heat hours is crucial.

Tonight’s Weather: Partly Cloudy with Thunderstorm Risk

Tonight, the skies will be partly cloudy with a 30 percent chance of showers and a continued risk of thunderstorms. Winds will shift to the northwest at 20 km/h, gusting to 40 km/h before becoming light late in the evening. The low will be 23°C, with humidex values remaining high at 26 to 30.

Wardrobe Suggestions: A light, breathable outfit will be comfortable for the evening. Keep an umbrella or rain jacket handy due to the chance of showers.

Tomorrow’s Weather: June 20, 2024

Thursday will bring a mix of sun and clouds, with a 30 percent chance of showers in the afternoon and a risk of thunderstorms. The high will be 31°C, with humidex values reaching 39. The UV index will again be very high at 10.

Wardrobe Suggestions: Continue wearing light, breathable clothing and use sun protection. Stay hydrated and avoid strenuous outdoor activities during the hottest parts of the day.

Health Advisory: Protecting Against Heat-Related Illnesses

Extreme heat poses health risks, especially for vulnerable groups such as older adults, infants, young children, pregnant individuals, and those with physical or mental illnesses. Heat-related illnesses can include swelling, rash, cramps, fainting, heat exhaustion, and heat stroke.

  • Heat stroke is a medical emergency: Symptoms include high body temperature, confusion, lack of sweating, and unconsciousness. Call 911 or your local emergency number immediately. While waiting for help, move the person to a cool place, apply cold water to their skin, and fan them as much as possible.

Historical Weather Trivia

Toronto’s historical high for June 19 is 35.5°C, recorded in 1988, while the record low was 5.6°C, set in 1950.

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