UV Index
UV Index
Today's UV index in Santa Ana, United States 
will be up to 9.8, 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: 2025-05-21
With a UV index of 9.8 in Santa Ana, 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.
The UV index in Santa Ana, United States, is usually moderate to high, especially during summer months, ranging between 5 and 9. It peaks around midday when the sun is strongest.
Santa Ana experiences mild, wet winters and hot, dry summers. Spring and autumn are short and pleasant with moderate temperatures. Rainfall mainly happens from November to March, with dry conditions the rest of the year.
Compared to surrounding regions in Southern California, Santa Ana tends to be warmer and sunnier than coastal cities like Los Angeles. It is drier than areas to the north and east, such as the Inland Empire and deserts.
See the UV index hour by hour for Santa Ana, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.