UV Index for Castle Hills, TX

Current Castle Hills UV Index

0 (Low)

Last Updated 3 minutes ago

Hourly Castle Hills UV Index

The hourly Castle Hills, TX UV Index forecast for Wednesday, September 17th, 2025.

5 Day Hourly Castle Hills UV Index Forecast

Last Updated 15 hours ago

The UV index forecast for the next five days in Castle Hills, TX has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Castle Hills over the next five days will be 9.5 on Friday, September 19th at 1:00 pm.

The UV index forecast for Wednesday, September 17th in Castle Hills, TX is below.

Time UV Index Risk
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.1
Low
9am 0.8
Low
10am 2.4
Low
11am 4.4
Moderate
12pm 5.8
Moderate
1pm 7.2
High
2pm 7.1
High
3pm 7
High
4pm 3.4
Moderate
5pm 1.9
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 Thursday, September 18th in Castle Hills, TX 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 0.1
Low
9am 0.8
Low
10am 2.5
Low
11am 4.9
Moderate
12pm 7.4
High
1pm 9.2
Very High
2pm 9.4
Very High
3pm 7.7
High
4pm 4
Moderate
5pm 1.6
Low
6pm 0.4
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 Hills, TX 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 0.1
Low
9am 0.9
Low
10am 2.6
Low
11am 5.1
Moderate
12pm 7.8
High
1pm 9.5
Very High
2pm 8.9
Very High
3pm 5
Moderate
4pm 1.4
Low
5pm 1
Low
6pm 0.4
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Castle Hills, TX 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