Marriott-Slaterville, UT: Current UV Index and Hourly Forecast

On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Marriott-Slaterville, Weber County, Utah (UT). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

Current UV Index
4:47 PM MDT

2.7Risk: Moderate

(Updated 47 minutes ago.)

As of 4:47 PM MDT, the UV Index in Marriott-Slaterville, UT is 2.7 (Moderate).
The UV Index is expected to fall to 1.3 (Low) between 5:00 PM - 6:00 PM MDT today.

Hourly UV Index Forecast for Today
Wednesday, October 8, 2025

7 AM10 AM1 PM4 PM7 PM10 PMMountain Daylight Time (MDT)0123456789101112Current Time: 4:47 PM, MDT

UV Index Data sourced from the NOAA.


As of 4:47 PM MDT today in Marriott-Slaterville, UT, the UV Index is currently at a moderate level of 2.7. As the day progresses, the UV index is expected to fall as the sun sets.

The UV Index will return to low levels of 1.3 at 5:00 PM. As the day transitions into the night, the UV Index will drop back down to 0 at 7:00 PM.


Summary of Hourly UV Index Forecast for Today and Tomorrow in Marriott-Slaterville, UT

Today

Time RangeUV IndexRisk
7:00 AM - 11:00 AM (MDT)0 - 1.3
Low
11:00 AM - 5:00 PM2.7 - 5.1
Moderate
5:00 PM - 12:00 AM0 - 1.3
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 11:00 AM (MDT)0 - 1.3
Low
11:00 AM - 5:00 PM2.7 - 5.1
Moderate
5:00 PM - 12:00 AM0 - 1.3
Low

Detailed Hourly Marriott-Slaterville UV Index Forecast for the next 5 days

Download CSV (Excel) ↓
TimeUV IndexRisk
4:00 PM - 5:00 PM (Now, MDT)2.7
Moderate
5:00 PM - 6:00 PM 1.3
Low
6:00 PM - 7:00 PM 0.4
Low
7:00 PM - 8:00 PM 0
Low
8:00 PM - 9:00 PM 0
Low
9:00 PM - 10:00 PM 0
Low
10:00 PM - 11:00 PM 0
Low
11:00 PM - 12:00 AM 0
Low

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