UV Index
Ottawa UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index5.7
- Avg Clouds45%
- Max Temp21.9 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Ottawa, Canada 
will reach a high of 5.7 today. This means a moderate level of sun exposure. See our tips below to stay safe!
Last checked: 2025-09-04
Hourly Forecast Chart
Today's Safety Tips
The sun is a bit strong. Find some shade during midday. Wear a hat, sunglasses, and use SPF 30+ sunscreen if you'll be outside for a while.
Ottawa's UV Index
Ottawa's UV index varies seasonally, reaching its highest levels in summer, typically around 6 to 7, and dropping to very low levels, close to 0, during winter months. Seasonal patterns in Ottawa show cold, snowy winters with temperatures often below freezing and warm, humid summers with temperatures ranging from 20 to 30°C. Compared to other Canadian cities, Ottawa experiences more pronounced seasonal changes. It tends to have colder winters than cities like Toronto but milder winters than places further north. Neighboring cities in Quebec have similar weather patterns.
Hourly UV Index Trend
See the UV index hour by hour for Ottawa. When the level is high, it's smart to find some shade.
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