Weld County, CO: Current UV Index and Hourly Forecast

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As of 3:59 PM MDT on April 30, 2026, out of 28 cities in Weld County, CO in our database, 25 cities (89%) have a UV Index reading of Moderate, while 3 cities (11%) have a UV Index reading of High. The city with the highest UV Index reading right now is Erie, CO with a reading of 5.5.

Over the next 24 hours, the highest UV Index reading in Weld County, CO is expected to be 8 in Erie between 1:00 PM - 2:00 PM MDT tomorrow.

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Current UV Index in Cities in Weld County, CO

• Aristocrat Ranchettes - 5.2
• Ault - 4
• Briggsdale - 4.8
• Dacono - 5.5
• Eaton - 4
• Erie - 5.5
• Evans - 3.8
• Firestone - 2.8
• Fort Lupton - 5.2
• Frederick - 5.5
• Garden City - 4
• Gilcrest - 3.8
• Greeley - 4
• Grover - 4.8
• Hudson - 4.3
• Johnstown - 2.8
• Keenesburg - 4.2
• Kersey - 4.7
• La Salle - 3.8
• Lochbuie - 5.2
• Mead - 2.8
• Milliken - 3.8
• Nunn - 4.5
• Pierce - 4.5
• Platteville - 3.8
• Raymer - 4.9
• Severance - 4
• Windsor - 3.4