Butler County, PA: Current UV Index and Hourly Forecast

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As of 9:56 AM EDT on June 25, 2025, all 32 cities in Butler County, PA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Eau Claire, PA with a reading of 2.8.

Over the next 24 hours, the highest UV Index reading in Butler County, PA is expected to be 10.6 in Harrisville between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Butler County, PA

• Bruin - 2.7
• Butler - 2.7
• Callery - 2.7
• Cherry Valley - 2.8
• Chicora - 2.7
• East Butler - 2.7
• Eau Claire - 2.8
• Evans City - 2.7
• Fairview - 2.7
• Harmony - 2.7
• Harrisville - 2.7
• Homeacre-Lyndora - 2.7
• Karns City - 2.7
• Lake Arthur Estates - 2.7
• Mars - 2.7
• Meadowood - 2.7
• Meridian - 2.7
• Nixon - 2.7
• Oak Hills - 2.7
• Petrolia - 2.7
• Portersville - 2.7
• Prospect - 2.7
• Saxonburg - 2.7
• Seven Fields - 2.7
• Shanor-Northvue - 2.7
• Slippery Rock - 2.7
• Slippery Rock University - 2.7
• Unionville - 2.7
• Valencia - 2.7
• West Liberty - 2.7
• West Sunbury - 2.7
• Zelienople - 2.6