Princeton UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index2.5
- Avg Clouds52%
- Max Temp12.8 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Princeton, United States 
will reach a high of 2.5 today. This means a low level of sun exposure. See our tips below to stay safe!
Last checked: 2025-11-21
Hourly Forecast Chart
Today's Safety Tips
The sun danger is low (0-2). You can enjoy the outdoors safely! On bright days, sunglasses are a good idea.
Princeton's UV Index
The UV index in Princeton usually ranges from low to moderate during winter and spring and can reach high levels during summer days, especially around noon when the sun is strongest.
Weather Seasons
Princeton experiences four seasons: cold, snowy winters; warm, humid summers; and mild, pleasant springs and autumns with changing leaf colors. Seasonal changes bring varying temperatures and precipitation patterns.
Princeton's Climate
Compared to nearby cities like New York and Philadelphia, Princeton has similar weather but often slightly less urban heat. It shares a humid continental climate with most of the northeastern United States, with cold winters and warm summers.
Hourly UV Index Trend
See the UV index hour by hour for Princeton. When the level is high, it's smart to find some shade.
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