Casper UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index6.2
- Avg Clouds38%
- Max Temp22.1 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Casper, United States 
will reach a high of 6.2 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-09-21
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.
Casper's UV Index
The UV index in Casper varies throughout the year, generally reaching moderate to high levels during late spring and summer months. It often peaks around midday when the sun is strongest.
Weather Seasons
Casper's weather shows four distinct seasons, with cold, snowy winters and warm, dry summers. Spring and fall bring mild temperatures with occasional rain or snow showers, making the weather quite changeable during these times.
Casper's Climate
Compared to other parts of Wyoming and nearby states like Montana and Colorado, Casper experiences similar seasonal shifts but tends to be slightly windier. Its elevation leads to cooler temperatures overall than lower-lying areas in the region.
Hourly UV Index Trend
See the UV index hour by hour for Casper. When the level is high, it's smart to find some shade.
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