UV Index for Katy, TX

Current Katy UV Index

0 (Low)

Last Updated 15 minutes ago

Hourly Katy UV Index

The hourly Katy, TX UV Index forecast for Wednesday, July 2nd, 2025.

5 Day Hourly Katy UV Index Forecast

Last Updated 11 hours ago

The UV index forecast for the next five days in Katy, TX has 3 days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Katy over the next five days will be 11.8 on Wednesday, July 2nd at 1:00 pm.

The UV index forecast for Wednesday, July 2nd in Katy, TX is below.

Time UV Index Risk
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.1
Low
8am 0.8
Low
9am 2.3
Low
10am 4.8
Moderate
11am 7.8
High
12pm 10.5
Very High
1pm 11.8
Extreme
2pm 11.8
Extreme
3pm 10
Very High
4pm 7.2
High
5pm 4.3
Moderate
6pm 1.9
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 3rd in Katy, 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 0.1
Low
8am 0.7
Low
9am 2.1
Low
10am 4.4
Moderate
11am 7.3
High
12pm 9.8
Very High
1pm 11.1
Extreme
2pm 11.1
Extreme
3pm 9.5
Very High
4pm 6.8
High
5pm 4
Moderate
6pm 1.5
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 4th in Katy, 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 0.1
Low
8am 0.8
Low
9am 2.3
Low
10am 4.8
Moderate
11am 7.8
High
12pm 10.2
Very High
1pm 11.5
Extreme
2pm 11.4
Extreme
3pm 9.8
Very High
4pm 7
High
5pm 4.2
Moderate
6pm 1.9
Low
7pm 0.6
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 5th in Katy, 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 0.1
Low