UV Index
UV Index
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Today's UV index in Livermore, United States 
will be up to 4.4, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 4.4 in Livermore, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Livermore, California experiences a Mediterranean climate, characterized by mild winters and hot, dry summers. The UV index is typically high, often reaching extreme levels during peak summer months, especially in July and August.
The region has two distinct seasons: a dry season from May to October and a wet season from November to April. Summer temperatures often reach the mid-90s (Fahrenheit), while winter temperatures range from the mid-40s to mid-50s.
Compared to neighboring regions, Livermore's climate is drier and warmer than San Francisco, but cooler than the San Joaquin Valley. This is due to its inland location, which moderates the marine influence from the Pacific Ocean, unlike coastal cities in California.