Jefferson County, OH: Current UV Index and Hourly Forecast

• USA →
• Ohio →
• Jefferson County

As of 9:26 AM EDT on June 15, 2026, all 20 cities in Jefferson County, OH in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Adena, OH with a reading of 2.1.

Over the next 24 hours, the highest UV Index reading in Jefferson County, OH is expected to be 8.6 in Toronto between 1:00 PM - 2:00 PM EDT today.

Search Cities in Jefferson County, OH

Current UV Index in Cities in Jefferson County, OH

• Adena - 2.1
• Amsterdam - 1.2
• Bergholz - 1.2
• Bloomingdale - 1.6
• Brilliant - 1.6
• Connorville - 1.6
• East Springfield - 0.7
• Empire - 0.7
• Irondale - 0.7
• Mingo Junction - 1
• Mount Pleasant - 1.6
• New Alexandria - 1.6
• Pottery Addition - 0.6
• Rayland - 1.6
• Richmond - 0.7
• Steubenville - 1.6
• Stratton - 0.7
• Tiltonsville - 1.6
• Toronto - 0.6
• Wintersville - 0.7