Collin County, TX: Current UV Index and Hourly Forecast

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As of 8:51 AM CDT on July 19, 2026, all 25 cities in Collin County, TX in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Plano, TX with a reading of 0.7.

Over the next 24 hours, the highest UV Index reading in Collin County, TX is expected to be 10.7 in Plano between 2:00 PM - 3:00 PM CDT today.

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Current UV Index in Cities in Collin County, TX

• Allen - 0.7
• Anna - 0.7
• Blue Ridge - 0.7
• Celina - 0.7
• Fairview - 0.7
• Farmersville - 0.7
• Frisco - 0.7
• Josephine - 0.7
• Lavon - 0.7
• Lowry Crossing - 0.7
• Lucas - 0.7
• McKinney - 0.7
• Melissa - 0.7
• Murphy - 0.7
• Nevada - 0.7
• New Hope - 0.7
• Parker - 0.7
• Plano - 0.7
• Princeton - 0.7
• Prosper - 0.7
• Seis Lagos - 0.7
• St. Paul - 0.7
• Westminster - 0.7
• Weston - 0.7
• Wylie - 0.7