Harrisburg UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index6.8
- Avg Clouds55%
- Max Temp26.6 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Harrisburg, United States 
will reach a high of 6.8 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2026-04-17
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.
Harrisburg's UV Index
The UV index in Harrisburg varies throughout the year, typically reaching higher levels around 7 to 9 during summer months, indicating strong sun exposure. In spring and fall, it usually ranges from 3 to 6, and is lowest in winter, often below 3.
Weather Seasons
Harrisburg experiences four distinct seasons. Summers are warm and humid with temperatures often in the 80s Fahrenheit. Winters can be cold with occasional snow. Spring and fall bring mild, comfortable weather with blooming flowers or colorful leaves.
Harrisburg's Climate
Compared to nearby cities like Philadelphia or Pittsburgh, Harrisburg has similar seasonal weather but can be slightly cooler in winter. Its climate is typical for the Mid-Atlantic region, with less extreme heat than southern states and milder winters than northern New England.
Hourly UV Index Trend
See the UV index hour by hour for Harrisburg. When the level is high, it's smart to find some shade.
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