UV Index
UV Index
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Today's UV index in Las Vegas, United States 
will be up to 3.3, 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 3.3 in Las Vegas, 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.
The UV index in Las Vegas is typically high due to its desert climate and sunny weather. It can reach extreme levels during the summer, making sun protection essential.
Las Vegas experiences two main seasons: a long, hot summer and a short, mild winter. Summer temperatures often exceed 100°F (38°C), while winter temperatures rarely fall below freezing.
Compared to its region and neighboring countries, Las Vegas has a much drier climate. The city receives minimal annual rainfall, contrasting with the wetter climates of Southern California and Mexico. However, like much of the American Southwest, Las Vegas has a high risk of heatwaves and droughts.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Las Vegas. It's designed to provide you with a better understanding of the yearly weather and sun exposure.