Northumberland County, PA: Current UV Index and Hourly Forecast

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As of 4:55 PM EDT on October 12, 2026, all 24 cities in Northumberland County, PA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Sunbury, PA with a reading of 1.9.

Over the next 24 hours, the highest UV Index reading in Northumberland County, PA is expected to be 4.3 in Sunbury between 2:00 PM - 3:00 PM EDT tomorrow.

Search Cities in Northumberland County, PA

Current UV Index in Cities in Northumberland County, PA

• Atlas - 1.8
• Dalmatia - 1.9
• Dewart - 1.8
• Elysburg - 1.8
• Fairview-Ferndale - 1.8
• Herndon - 1.9
• Kapp Heights - 1.8
• Kulpmont - 1.8
• Marion Heights - 1.8
• Marshallton - 1.8
• McEwensville - 1.8
• Milton - 1.8
• Montandon - 1.8
• Mount Carmel - 1.8
• Northumberland - 1.8
• Ranshaw - 1.8
• Riverside - 1.8
• Shamokin - 1.8
• Strong - 1.8
• Sunbury - 1.9
• Tharptown - 1.8
• Trevorton - 1.9
• Turbotville - 1.8
• Watsontown - 1.8