UV Index for Roy, UT

Current Roy UV Index

0 (Low)

Last Updated 26 minutes ago

Hourly Roy UV Index

The hourly Roy, UT UV Index forecast for Wednesday, September 3rd, 2025.

5 Day Hourly Roy UV Index Forecast

Last Updated 13 hours ago

The UV index forecast for the next five days in Roy, UT has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Roy over the next five days will be 8 on Friday, September 5th at 1:00 pm.

The UV index forecast for Wednesday, September 3rd in Roy, UT is below.

Time UV Index Risk
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.3
Low
9am 1.1
Low
10am 2.7
Low
11am 4.6
Moderate
12pm 6.6
High
1pm 7.8
High
2pm 7.6
High
3pm 6.3
High
4pm 4.3
Moderate
5pm 2.4
Low
6pm 1
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 4th in Roy, UT is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 1
Low
10am 2.6
Low
11am 4.4
Moderate
12pm 6.3
High
1pm 7.2
High
2pm 7.2
High
3pm 6.2
High
4pm 4.4
Moderate
5pm 2.4
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 5th in Roy, UT is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 1
Low
10am 2.6
Low
11am 4.7
Moderate
12pm 6.7
High
1pm 8
Very High
2pm 7.9
High
3pm 6.7
High
4pm 3.9
Moderate
5pm 1.6
Low
6pm 0.2
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 6th in Roy, UT is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low