Mercer County, IL: Current UV Index and Hourly Forecast

• USA →
• Illinois →
• Mercer County

As of 3:35 AM CDT on June 22, 2025, all 15 cities in Mercer County, IL in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Mercer County, IL is expected to be 10.4 in Aledo between 1:00 PM - 2:00 PM CDT today.

Search Cities in Mercer County, IL

Current UV Index in Cities in Mercer County, IL

• Aledo - 0
• Cable - 0
• Eliza - 0
• Hamlet - 0
• Joy - 0
• Keithsburg - 0
• Matherville - 0
• Millersburg - 0
• New Boston - 0
• North Henderson - 0
• Preemption - 0
• Seaton - 0
• Sherrard - 0
• Swedona - 0
• Viola - 0