Toronto residents are starting their Tuesday under mostly cloudy skies, with warm, humid conditions shaping up for another classic July day. With temperatures poised to rise and a humidex approaching the mid-30s, it’s a day to stay cool and sun-smart. A high UV index and increasing cloud-sun dynamics will define the weather narrative across the Greater Toronto Area.
Today’s Weather Overview
Current Conditions
As of 7:00 AM EDT at Toronto Pearson International Airport:
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Temperature: 19.9°C
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Condition: Mostly Cloudy
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Wind: North at 10 km/h
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Pressure: 101.7 kPa and rising
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Humidity: 83%
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Dew Point: 16.9°C
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Visibility: Excellent, at 24 km
These early morning conditions are setting the stage for a warm and humid day. The relatively high humidity is creating a muggy feel, and as the sun emerges this afternoon, expect the humidex to climb to 35. Skies will shift to a mix of sun and cloud, with temperatures peaking at 28°C. The UV index of 8 means sun protection is essential.
Tomorrow’s Forecast
Expected Conditions
Wednesday, July 9, 2025
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Daytime: A mix of sun and cloud, with a 40% chance of showers late morning into the afternoon, possibly accompanied by isolated thunderstorms.
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High: 27°C
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Humidex: 33
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UV Index: 9 (Very High)
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Night: Cloudy periods continue with a low of 17°C.
Thursday, July 10, 2025
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Daytime: Expect a similar mix of sun and cloud, with a 30% chance of showers during the day.
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High: 27°C
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Night: Skies clear with a comfortable low of 18°C.
Wardrobe Recommendations
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Today: Lightweight, breathable clothing is key. Opt for short sleeves and sun hats. Sunglasses and sunscreen (SPF 30+) are a must given the UV index of 8.
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Wednesday: Carry a light rain jacket or umbrella in case of showers or thunderstorms. Choose moisture-wicking clothes due to the humidex.
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Thursday: Similar attire to Wednesday, with light outerwear handy for possible light rain.
Weather Trivia
Did you know?
On July 8, 1936, Toronto recorded a scorching high of 40.6°C, still standing as the city’s hottest day on record. That infamous heat wave gripped much of North America, causing widespread droughts and hardship during the Dust Bowl era.
