UV Index
UV Index
Today's UV index in Irvine, 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: 2025-05-09
With a UV index of 9.5 in Irvine, 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.
Irvine has a UV index that often ranges from moderate to high, especially in the summer months, meaning the sun's rays can be quite strong during the day. Winter months usually see lower UV levels. The city experiences warm, dry summers with temperatures often in the 80s and mild, wetter winters with temperatures in the 50s to 60s. Rainfall mostly occurs between November and March, while summers are usually sunny and dry. Compared to nearby Los Angeles, Irvine is slightly cooler and less smoggy due to its coastal location. It has milder winters and less temperature variation than inland areas of Southern California. Neighboring states like Nevada and Arizona have hotter summers and colder winters than Irvine.
See the UV index hour by hour for Irvine, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.