UV Index
Longueuil UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index5.4
- Avg Clouds14%
- Max Temp17.4 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Longueuil, Canada 
will reach a high of 5.4 today. This means a moderate level of sun exposure. See our tips below to stay safe!
Last checked: 2025-09-07
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.
Longueuil's UV Index
The UV index in Longueuil varies throughout the year, generally low in winter months and highest in summer, often reaching moderate to high levels around June and July. Seasonal patterns show cold, snowy winters with temperatures often below freezing, and warm, humid summers with temperatures typically in the 20s Celsius. Compared to other parts of Canada, Longueuil has milder winters than northern regions but colder than coastal areas. It shares similar weather patterns with nearby Montreal and has colder winters than southern U.S. cities but warmer summers than some northern Canadian areas.
Hourly UV Index Trend
See the UV index hour by hour for Longueuil. When the level is high, it's smart to find some shade.
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