UV Index
UV Index
Today's UV index in Campbell, United States 
will be up to 9.5, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-24
With a UV index of 9.5 in Campbell, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
Campbell, United States, usually has a UV index ranging from low to moderate, with peak UV levels during summer months reaching around 7 to 9, which means the sun can be quite strong at midday.
Campbell experiences mild, wet winters and warm, dry summers. Rain mostly falls between November and March, while summer months from June to September are typically sunny and dry with comfortable temperatures.
Compared to nearby areas like San Jose and the broader San Francisco Bay Area, Campbell has similar weather patterns but may be slightly warmer in summer. Neighboring states like Oregon and Washington generally have cooler, wetter climates year-round.
See the UV index hour by hour for Campbell, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.