Butler County, PA: Current UV Index and Hourly Forecast

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As of 10:09 AM EDT on October 8, 2026, all 32 cities in Butler County, PA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Butler, PA with a reading of 1.3.

Over the next 24 hours, the highest UV Index reading in Butler County, PA is expected to be 4.2 in Butler between 1:00 PM - 2:00 PM EDT today.

Search Cities in Butler County, PA

Current UV Index in Cities in Butler County, PA

• Bruin - 1.3
• Butler - 1.3
• Callery - 1.3
• Cherry Valley - 1.3
• Chicora - 1.3
• East Butler - 1.3
• Eau Claire - 1.3
• Evans City - 1.3
• Fairview - 1.3
• Harmony - 1.3
• Harrisville - 1.2
• Homeacre-Lyndora - 1.3
• Karns City - 1.3
• Lake Arthur Estates - 1.2
• Mars - 1.3
• Meadowood - 1.3
• Meridian - 1.3
• Nixon - 1.3
• Oak Hills - 1.3
• Petrolia - 1.3
• Portersville - 1.2
• Prospect - 1.3
• Saxonburg - 1.3
• Seven Fields - 1.3
• Shanor-Northvue - 1.3
• Slippery Rock - 1.3
• Slippery Rock University - 1.3
• Unionville - 1.3
• Valencia - 1.3
• West Liberty - 1.3
• West Sunbury - 1.3
• Zelienople - 1.3