UV Index
Frederick UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index8.3
- Avg Clouds93%
- Max Temp23.2 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Frederick, United States 
will reach a high of 8.3 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-21
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.
Frederick's UV Index
Frederick, United States, has a UV index that ranges from low to high depending on the season, with higher values in the summer months, often reaching levels that can cause sunburn quickly. Seasons in Frederick include cold winters with occasional snow, warm and humid summers, and mild spring and autumn with changing foliage colors. Compared to nearby cities like Washington D.C., Frederick tends to be slightly cooler and less humid, while its weather is similar to other parts of Maryland and the Mid-Atlantic region.
Hourly UV Index Trend
See the UV index hour by hour for Frederick. When the level is high, it's smart to find some shade.
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