UV Index
UV Index
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Today's UV index in Fresno, United States 
will be up to 2.2, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.
Today, the UV index suggests low sun danger (0-2) in Fresno, reaching up to 2.2. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.
Read more here about the climate and sun exposure in and around Fresno.
The UV index in Fresno can range from moderate to high throughout the year. During summer (June-August), the UV index is usually at its highest, reaching levels of 10 or above, which is considered very high (extreme). It is important to protect yourself from harmful UV rays by wearing sunscreen, sunglasses, and protective clothing when spending time outdoors.
Fresno experiences distinct seasons, with hot and dry summers, mild and wet winters, and pleasant springs and autumns. Summer temperatures average around 35-40 °C (95-104 °F) during the day, while winter temperatures average around 10-15 °C (50-59 °F) during the day. Rainfall tends to be concentrated in the winter months, with occasional showers and thunderstorms.
Compared to other parts of the region, Fresno has more sunny days and relatively low humidity levels. The city benefits from its geographical location, giving it a Mediterranean climate. Compared to coastal cities, such as Los Angeles or San Francisco, Fresno experiences hotter summers and colder winters, but also enjoys a higher number of sunny days throughout the year.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Fresno. It's designed to provide you with a better understanding of the yearly weather and sun exposure.