Collin County, TX: Current UV Index and Hourly Forecast

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As of 8:16 PM CDT on May 19, 2026, all 25 cities in Collin County, TX 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 Collin County, TX is expected to be 9.6 in Wylie between 2:00 PM - 3:00 PM CDT tomorrow.

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Current UV Index in Cities in Collin County, TX

• Allen - 0
• Anna - 0
• Blue Ridge - 0
• Celina - 0
• Fairview - 0
• Farmersville - 0
• Frisco - 0
• Josephine - 0
• Lavon - 0
• Lowry Crossing - 0
• Lucas - 0
• McKinney - 0
• Melissa - 0
• Murphy - 0
• Nevada - 0
• New Hope - 0
• Parker - 0
• Plano - 0
• Princeton - 0
• Prosper - 0
• Seis Lagos - 0
• St. Paul - 0
• Westminster - 0
• Weston - 0
• Wylie - 0