Sioux City UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.6
- Avg Clouds54%
- Max Temp28.7 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Sioux City, United States 
will reach a high of 7.6 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-22
Hourly Forecast Chart
Today's Safety Tips
Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.
Sioux City's UV Index
Sioux City has a UV index that varies by season, reaching its highest values in summer months and dropping to low levels during winter. The UV index can range from around 2 in winter to 8 or 9 in summer.
Weather Seasons
Sioux City experiences four distinct seasons: cold winters with snow, warm humid summers, mild springs, and cool autumns. Temperature and precipitation levels change significantly throughout the year, with the warmest period from June to August.
Sioux City's Climate
Compared to other parts of the Midwest and nearby states like Nebraska and Iowa, Sioux City has a fairly typical continental climate. It tends to have more extreme temperatures than coastal regions but less humidity than the deeper south. Neighboring cities experience similar weather patterns.
Hourly UV Index Trend
See the UV index hour by hour for Sioux City. When the level is high, it's smart to find some shade.
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