Jefferson County, OH: Current UV Index and Hourly Forecast

• USA →
• Ohio →
• Jefferson County

As of 12:45 PM EDT on July 5, 2026, all 20 cities in Jefferson County, OH in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Mingo Junction, OH with a reading of 7.9.

Over the next 24 hours, the highest UV Index reading in Jefferson County, OH is expected to be 9.5 in Adena between 2:00 PM - 3:00 PM EDT today.

Search Cities in Jefferson County, OH

Current UV Index in Cities in Jefferson County, OH

• Adena - 7.8
• Amsterdam - 7.8
• Bergholz - 7.8
• Bloomingdale - 7.8
• Brilliant - 7.8
• Connorville - 7.8
• East Springfield - 7.8
• Empire - 7.8
• Irondale - 7.8
• Mingo Junction - 7.9
• Mount Pleasant - 7.8
• New Alexandria - 7.8
• Pottery Addition - 7.6
• Rayland - 7.8
• Richmond - 7.8
• Steubenville - 7.8
• Stratton - 7.8
• Tiltonsville - 7.8
• Toronto - 7.6
• Wintersville - 7.8