Ottawa UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index6.8
- Avg Clouds43%
- Max Temp23.6 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Ottawa, United States 
will reach a high of 6.8 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-29
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.
Ottawa's UV Index
Ottawa, United States, experiences a UV index that can range from low to very high depending on the season, typically higher in the summer months and lower in the winter.
Weather Seasons
The city has four distinct seasons: cold, snowy winters; warm, humid summers; and mild springs and autumns, with temperatures varying widely between seasons.
Ottawa's Climate
Compared to nearby cities and countries, Ottawa's climate is colder in winter than many U.S. southern cities but milder than northern Canada, with more snowfall than places further south but less than some northern Canadian regions.
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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