Boulder UV Index Today
- Current UV Index5.0
- Peak UV Index7.0
- Temperature22.5 ℃
- Peak UV at 1 PM
- Protection Recommended ☀️
Last updated:
The UV index in Boulder, United States 
will reach a high of 5 today. This means a normal level of sun exposure. See our tips below to stay safe!
Hourly Forecast Chart
Today's Safety Tips
Check the live data above for the current conditions and stay safe in the sun!
Boulder's UV Index
Boulder's UV index can be quite high, especially in summer, often reaching levels of 7 to 9, which means strong sun exposure. In winter, the UV index drops significantly, sometimes below 2.
Weather Seasons
Boulder experiences four distinct seasons. Summers are warm and sunny, while winters are cold with occasional snow. Springs and autumns are mild, with moderate temperatures and changing leaves in fall.
Boulder's Climate
Compared to nearby Denver, Boulder is slightly cooler due to its higher elevation. The region has more sunshine than many other parts of Colorado. Neighboring states like Wyoming and Nebraska generally have lower UV indexes and cooler temperatures.
Hourly UV Index Trend
See the UV index hour by hour for Boulder. When the level is high, it's smart to find some shade.
- TimeUVLevelTemp
- 12 PM5.0moderate22 ℃
Nearby Cities
Check the UV index in other cities near Boulder.