San Jose UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.4
- Avg Clouds4%
- Max Temp33.4 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in San Jose, United States 
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: 2025-09-17
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.
San Jose's UV Index
San Jose's UV index is generally moderate to high, especially during summer months, often ranging from 6 to 9. This means the sun's rays can be quite strong on clear days.
Weather Seasons
San Jose experiences warm, dry summers and mild, wet winters. Most rain falls between November and March, while summers are usually sunny and dry, making it a Mediterranean climate.
San Jose's Climate
Compared to other parts of California, San Jose is warmer and drier than coastal cities like San Francisco but cooler and less arid than places in the Central Valley. It has milder weather than neighboring inland areas in Nevada or Arizona.
Hourly UV Index Trend
See the UV index hour by hour for San Jose. When the level is high, it's smart to find some shade.
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