UV Index for Castle Valley, UT

Current Castle Valley UV Index

0 (Low)

Last Updated 18 minutes ago

Hourly Castle Valley UV Index

The hourly Castle Valley, UT UV Index forecast for Thursday, September 18th, 2025.

5 Day Hourly Castle Valley UV Index Forecast

Last Updated 14 hours ago

The UV index forecast for the next five days in Castle Valley, UT has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Castle Valley over the next five days will be 7.9 on Thursday, September 18th at 1:00 pm.

The UV index forecast for Thursday, September 18th in Castle Valley, UT is below.

Time UV Index Risk
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 1
Low
10am 2.7
Low
11am 4.8
Moderate
12pm 6.8
High
1pm 7.9
High
2pm 7.6
High
3pm 6.1
High
4pm 4.1
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 19th in Castle Valley, 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 4.8
Moderate
12pm 6.7
High
1pm 7.8
High
2pm 7.5
High
3pm 6
High
4pm 3.8
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Castle Valley, 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 2.7
Low
11am 4.8
Moderate
12pm 6.6
High
1pm 7.5
High
2pm 6.1
High
3pm 5.1
Moderate
4pm 3.9
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, September 21st in Castle Valley, 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