Waterloo UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.4
- Avg Clouds18%
- Max Temp28.2 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Waterloo, Canada 
will reach a high of 7.4 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-15
Hourly Forecast Chart
Today's Safety Tips
Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.
Waterloo's UV Index
Waterloo, Canada, has a UV index that varies throughout the year. It is lowest in winter, often between 0 and 1, and highest in summer, reaching around 6 to 7 during sunny days.
Weather Seasons
The weather in Waterloo changes with the seasons. Winters are cold and snowy, with temperatures often below freezing. Summers are warm and sometimes humid, while spring and fall are mild with occasional rain.
Waterloo's Climate
Compared to other parts of Ontario and nearby regions, Waterloo experiences similar seasonal weather but slightly colder winters than southern cities like Toronto. Neighboring areas such as Kitchener share almost identical weather patterns.
Hourly UV Index Trend
See the UV index hour by hour for Waterloo. When the level is high, it's smart to find some shade.
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