Big Horn County, WY: Current UV Index and Hourly Forecast

As of 9:46 AM MDT on August 10, 2025, all 11 cities in Big Horn County, WY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Greybull, WY with a reading of 1.9.

Over the next 24 hours, the highest UV Index reading in Big Horn County, WY is expected to be 8.4 in Lovell between 1:00 PM - 2:00 PM MDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Big Horn County, WY as of 9:46 AM MDT, August 10, 2025

Current UV Index in Cities in Big Horn County, WY

9:46 AM MDT, August 10, 2025