UV Index for Castle Rock, CO

Current Castle Rock UV Index

0 (Low)

Last Updated 33 minutes ago

Hourly Castle Rock UV Index

The hourly Castle Rock, CO UV Index forecast for Wednesday, July 2nd, 2025.

5 Day Hourly Castle Rock UV Index Forecast

Last Updated 10 hours ago

The UV index forecast for the next five days in Castle Rock, CO has 3 days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Castle Rock over the next five days will be 12.8 on Thursday, July 3rd at 1:00 pm.

The UV index forecast for Wednesday, July 2nd in Castle Rock, CO is below.

Time UV Index Risk
11pm 0
Low

The UV index forecast for Thursday, July 3rd in Castle Rock, CO 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 0.6
Low
8am 1.8
Low
9am 4
Moderate
10am 6.9
High
11am 9.8
Very High
12pm 12
Extreme
1pm 12.8
Extreme
2pm 8.8
Very High
3pm 3.9
Moderate
4pm 6.5
High
5pm 4
Moderate
6pm 1.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 4th in Castle Rock, CO 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 0.5
Low
8am 1.7
Low
9am 3.7
Moderate
10am 6.4
High
11am 7.9
High
12pm 5.6
Moderate
1pm 3.5
Moderate
2pm 1.9
Low
3pm 8.2
Very High
4pm 2
Low
5pm 2.5
Low
6pm 1
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 5th in Castle Rock, CO 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 0.5
Low
8am 1.7
Low
9am 3.7
Moderate
10am 6.5
High
11am 9.3
Very High
12pm 11.2
Extreme
1pm 11.8
Extreme
2pm 11.2
Extreme
3pm 9.1
Very High
4pm 6.2
High
5pm 3.6
Moderate
6pm 1.6
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 6th in Castle Rock, CO 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