Jefferson County, CO: Current UV Index and Hourly Forecast

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As of 7:14 PM MDT on April 18, 2026, all 23 cities in Jefferson County, CO in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Arvada, CO with a reading of 0.2.

Over the next 24 hours, the highest UV Index reading in Jefferson County, CO is expected to be 9 in Brook Forest between 1:00 PM - 2:00 PM MDT tomorrow.

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Current UV Index in Cities in Jefferson County, CO

• Applewood - 0.2
• Arvada - 0.2
• Aspen Park - 0.1
• Brook Forest - 0.2
• Coal Creek - 0.2
• Columbine - 0.1
• Dakota Ridge - 0.1
• East Pleasant View - 0.2
• Edgewater - 0.1
• Evergreen - 0.2
• Fairmount - 0.2
• Genesee - 0.2
• Golden - 0.2
• Idledale - 0.2
• Indian Hills - 0.2
• Ken Caryl - 0.1
• Kittredge - 0.2
• Lakeside - 0.1
• Lakewood - 0.1
• Morrison - 0.2
• Mountain View - 0.1
• West Pleasant View - 0.2
• Wheat Ridge - 0.1