University of California-Merced, CA: Current UV Index and Hourly Forecast

On this page, you can find the current UV Index and hourly 5 day UV Index forecast for University of California-Merced, Merced County, California (CA). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

Current UV Index
2:43 PM PDT

8Risk: Very High

(Updated 43 minutes ago.)

As of 2:43 PM PDT, the UV Index in University of California-Merced, CA is 8 (Very High).
The UV Index is expected to fall to 6.6 (High) between 3:00 PM - 4:00 PM PDT today.

Hourly UV Index Forecast for Today
Tuesday, June 24, 2025

6 AM9 AM12 PM3 PM6 PM9 PMPacific Daylight Time (PDT)0123456789101112Current Time: 2:43 PM, PDT

UV Index Data sourced from the NOAA.


As of 2:43 PM PDT today in University of California-Merced, CA, the UV Index is currently at a very high level of 8. As the day progresses, the UV index is expected to fall as the sun sets.

It will return to moderate levels at 4:00 PM and then drop to low levels again from 6:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 8:00 PM.


Summary of Hourly UV Index Forecast for Today and Tomorrow in University of California-Merced, CA

Today

Time RangeUV IndexRisk
6:00 AM - 9:00 AM (PDT)0 - 1.1
Low
9:00 AM - 11:00 AM2.6 - 4.5
Moderate
11:00 AM - 12:00 PM6.5
High
12:00 PM - 3:00 PM8 - 8.5
Very High
3:00 PM - 4:00 PM6.6
High
4:00 PM - 6:00 PM2.8 - 4.7
Moderate
6:00 PM - 12:00 AM0 - 1.3
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 9:00 AM (PDT)0 - 1.3
Low
9:00 AM - 11:00 AM2.9 - 5.1
Moderate
11:00 AM - 12:00 PM7.3
High
12:00 PM - 4:00 PM7.6 - 9.7
Very High
4:00 PM - 6:00 PM3.1 - 5.3
Moderate
6:00 PM - 12:00 AM0 - 1.4
Low

Detailed Hourly University of California-Merced UV Index Forecast for the next 5 days

Download CSV (Excel) ↓
TimeUV IndexRisk
2:00 PM - 3:00 PM (Now, PDT)8
Very High
3:00 PM - 4:00 PM 6.6
High
4:00 PM - 5:00 PM 4.7
Moderate
5:00 PM - 6:00 PM 2.8
Moderate
6:00 PM - 7:00 PM 1.3
Low
7:00 PM - 8:00 PM 0.4
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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