San Luis UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.9
- Avg Clouds45%
- Max Temp16.2 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in San Luis, United States 
will reach a high of 7.9 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2026-03-17
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.
San Luis's UV Index
The UV index in San Luis, United States, varies throughout the year, generally ranging from low to high levels depending on the season. It tends to peak in the summer months when the sun is strongest.
Weather Seasons
San Luis experiences hot summers and mild winters with limited rainfall. Summers are dry and sunny, while winters are cooler and occasionally wetter, reflecting typical desert climate patterns with large temperature changes between day and night.
San Luis's Climate
Compared to other areas in the southwestern United States, San Luis has similar hot and dry conditions. It is drier and hotter than many parts of neighboring states like Arizona and New Mexico, but cooler than the hottest desert regions in California and Nevada.
Hourly UV Index Trend
See the UV index hour by hour for San Luis. When the level is high, it's smart to find some shade.
- Loading hourly data...