UV Index for Round Rock, TX

Current Round Rock UV Index

0 (Low)

Last Updated 52 minutes ago

Hourly Round Rock UV Index

The hourly Round Rock, TX UV Index forecast for Tuesday, September 16th, 2025.

5 Day Hourly Round Rock UV Index Forecast

Last Updated 13 hours ago

The UV index forecast for the next five days in Round Rock, TX has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Round Rock over the next five days will be 8.8 on Thursday, September 18th at 2:00 pm.

The UV index forecast for Tuesday, September 16th in Round Rock, TX 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 0.9
Low
10am 2.5
Low
11am 4.8
Moderate
12pm 7.1
High
1pm 8.6
Very High
2pm 8.6
Very High
3pm 7.2
High
4pm 3.3
Moderate
5pm 0.7
Low
6pm 0.4
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, September 17th in Round Rock, 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 0.2
Low
9am 0.8
Low
10am 2.4
Low
11am 4.6
Moderate
12pm 6.8
High
1pm 8.2
Very High
2pm 8.2
Very High
3pm 6.7
High
4pm 2.4
Low
5pm 1.4
Low
6pm 0.6
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 Round Rock, 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 0.2
Low
9am 0.8
Low
10am 2.5
Low
11am 4.8
Moderate
12pm 7.1
High
1pm 8.6
Very High
2pm 8.8
Very High
3pm 7.4
High
4pm 4.8
Moderate
5pm 2.5
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 19th in Round Rock, 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