Gaithersburg UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index2.1
- Avg Clouds78%
- Max Temp4.7 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Gaithersburg, United States 
will reach a high of 2.1 today. This means a low level of sun exposure. See our tips below to stay safe!
Last checked: 2026-01-16
Hourly Forecast Chart
Today's Safety Tips
The sun danger is low (0-2). You can enjoy the outdoors safely! On bright days, sunglasses are a good idea.
Gaithersburg's UV Index
Gaithersburg's UV index varies throughout the year, reaching higher levels in summer months around 7 to 9, and dropping to low levels near 1 or 2 during winter.
Weather Seasons
Seasonally, Gaithersburg experiences warm, humid summers with temperatures often in the 80s°F (27-32°C), and cold winters with occasional snow and temperatures sometimes below freezing. Spring and fall are mild and pleasant with more moderate temperatures.
Gaithersburg's Climate
Compared to other parts of the Mid-Atlantic region, Gaithersburg has similar seasonal weather patterns but slightly cooler winters than southern states. It is generally warmer and less snowy than northern states like Pennsylvania or New York. Neighboring Maryland cities show comparable weather trends.
Hourly UV Index Trend
See the UV index hour by hour for Gaithersburg. When the level is high, it's smart to find some shade.
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