Northumberland County, PA: Current UV Index and Hourly Forecast

As of 12:19 PM EDT on September 1, 2025, all 24 cities in Northumberland County, PA in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Sunbury, PA with a reading of 6.2.

Over the next 24 hours, the highest UV Index reading in Northumberland County, PA is expected to be 6.8 in Sunbury between 1:00 PM - 2:00 PM EDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Northumberland County, PA as of 12:19 PM EDT, September 1, 2025

Current UV Index in Cities in Northumberland County, PA

12:19 PM EDT, September 1, 2025