Longmont UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index9.6
- Avg Clouds12%
- Max Temp26.5 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Longmont, United States 
will reach a high of 9.6 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-10
Hourly Forecast Chart
Today's Safety Tips
The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.
Longmont's UV Index
The UV index in Longmont usually ranges from low to moderate, peaking in the summer months. It rarely reaches very high levels, making sun exposure generally safer compared to sunny desert areas.
Weather Seasons
Longmont experiences four distinct seasons, with cold, snowy winters and warm summers. Spring and fall have mild temperatures and occasional rainfall. Snow is common in winter, while summer often brings thunderstorms.
Longmont's Climate
Compared to nearby Denver and Boulder, Longmont's weather is quite similar due to its close location. It is drier and sunnier than places further east in Colorado. Compared to neighboring states like Nebraska and Wyoming, Longmont is warmer and less humid.
Hourly UV Index Trend
See the UV index hour by hour for Longmont. When the level is high, it's smart to find some shade.
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