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
6:09 PM MDT

2Risk: Low

(Updated 9 minutes ago.)

As of 6:09 PM MDT, the UV Index in Marriott-Slaterville, UT is 2 (Low).
The UV Index is expected to fall to 0.8 (still Low) between 7:00 PM - 8:00 PM MDT today.

Hourly UV Index Forecast for Today
Tuesday, June 9, 2026

7 AM10 AM1 PM4 PM7 PM10 PMMountain Daylight Time (MDT)0123456789101112Current Time: 6:09 PM, MDT

UV Index Data sourced from the NOAA.


As of 6:09 PM MDT today in Marriott-Slaterville, UT, the UV Index is currently at a low level of 2. As the day progresses, the UV index is expected to fall as the sun sets.

The UV Index will return to low levels of 0.8 at 7:00 PM. As the day transitions into the night, the UV Index will drop back down to 0 at 9:00 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 - 2.2
Low
11:00 AM - 1:00 PM2.5 - 4.3
Moderate
1:00 PM - 3:00 PM7.5 - 7.8
Very High
3:00 PM - 4:00 PM4
Moderate
4:00 PM - 5:00 PM5.8
High
5:00 PM - 6:00 PM3.8
Moderate
6:00 PM - 12:00 AM0 - 2
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 10:00 AM (MDT)0 - 2.3
Low
10:00 AM - 11:00 AM4.2
Moderate
11:00 AM - 12:00 PM6.4
High
12:00 PM - 4:00 PM8.3 - 9.5
Very High
4:00 PM - 5:00 PM6.4
High
5:00 PM - 6:00 PM4.1
Moderate
6:00 PM - 12:00 AM0 - 2.2
Low

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

Download CSV (Excel) ↓
TimeUV IndexRisk
6:00 PM - 7:00 PM (Now, MDT)2
Low
7:00 PM - 8:00 PM 0.8
Low
8:00 PM - 9:00 PM 0.2
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

Current UV Index in Nearby Cities