Weld County, CO: Current UV Index and Hourly Forecast

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As of 2:30 PM MDT on June 10, 2026, out of 28 cities in Weld County, CO in our database, 27 cities (96%) have a UV Index reading of Very High, while 1 city (4%) have a UV Index reading of High. The city with the highest UV Index reading right now is Erie, CO with a reading of 9.7.

Over the next 24 hours, the highest UV Index reading in Weld County, CO is expected to be 10.3 in Greeley between 1:00 PM - 2:00 PM MDT tomorrow.

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Current UV Index in Cities in Weld County, CO

• Aristocrat Ranchettes - 9.6
• Ault - 9.4
• Briggsdale - 8.8
• Dacono - 9.7
• Eaton - 9.4
• Erie - 9.7
• Evans - 9.5
• Firestone - 9.6
• Fort Lupton - 9.6
• Frederick - 9.7
• Garden City - 9.4
• Gilcrest - 9.5
• Greeley - 9.4
• Grover - 8.8
• Hudson - 9.6
• Johnstown - 9.6
• Keenesburg - 9.3
• Kersey - 8.9
• La Salle - 9.5
• Lochbuie - 9.6
• Mead - 9.6
• Milliken - 9.5
• Nunn - 9.4
• Pierce - 9.4
• Platteville - 9.5
• Raymer - 6.1
• Severance - 9.4
• Windsor - 9.5