Weld County, CO: Current UV Index and Hourly Forecast

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As of 12:56 PM MST on December 4, 2025, all 28 cities in Weld County, CO in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Greeley, CO with a reading of 2.3.

Over the next 24 hours, the highest UV Index reading in Weld County, CO is expected to be 2.3 in Greeley between 12:00 PM - 1:00 PM MST today.

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Current UV Index in Cities in Weld County, CO

• Aristocrat Ranchettes - 2.3
• Ault - 2.3
• Briggsdale - 1.8
• Dacono - 2.3
• Eaton - 2.3
• Erie - 2.3
• Evans - 2.3
• Firestone - 2.3
• Fort Lupton - 2.3
• Frederick - 2.3
• Garden City - 2.3
• Gilcrest - 2.3
• Greeley - 2.3
• Grover - 1.8
• Hudson - 1.9
• Johnstown - 2.3
• Keenesburg - 1.8
• Kersey - 1.8
• La Salle - 2.3
• Lochbuie - 2.3
• Mead - 2.3
• Milliken - 2.3
• Nunn - 1.8
• Pierce - 1.8
• Platteville - 2.3
• Raymer - 1.8
• Severance - 2.3
• Windsor - 2.3