Weld County, CO: Current UV Index and Hourly Forecast

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As of 4:57 PM MDT on June 30, 2026, 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 Windsor, CO with a reading of 2.1.

Over the next 24 hours, the highest UV Index reading in Weld County, CO is expected to be 9.7 in Grover between 1:00 PM - 2:00 PM MDT tomorrow.

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Current UV Index in Cities in Weld County, CO

• Aristocrat Ranchettes - 1.1
• Ault - 0.7
• Briggsdale - 1.4
• Dacono - 1.3
• Eaton - 0.7
• Erie - 1.3
• Evans - 0.8
• Firestone - 0.9
• Fort Lupton - 1.1
• Frederick - 1.3
• Garden City - 0.7
• Gilcrest - 0.8
• Greeley - 0.7
• Grover - 1.4
• Hudson - 0.3
• Johnstown - 0.9
• Keenesburg - 0.2
• Kersey - 0.4
• La Salle - 0.8
• Lochbuie - 1.1
• Mead - 0.9
• Milliken - 0.8
• Nunn - 0.8
• Pierce - 0.8
• Platteville - 0.8
• Raymer - 1.7
• Severance - 0.7
• Windsor - 2.1