UV Index for Grand Terrace, CA

Current Grand Terrace UV Index

0 (Low)

Last Updated 21 minutes ago

Hourly Grand Terrace UV Index

The hourly Grand Terrace, CA UV Index forecast for Thursday, October 16th, 2025.

5 Day Hourly Grand Terrace UV Index Forecast

Last Updated 10 hours ago

The UV index forecast for the next five days in Grand Terrace, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Grand Terrace over the next five days will be 5.6 on Thursday, October 16th at 1:00 pm.

The UV index forecast for Thursday, October 16th in Grand Terrace, CA is below.

Time UV Index Risk
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, October 17th in Grand Terrace, CA 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 0.9
Low
10am 2.2
Low
11am 3.7
Moderate
12pm 4.9
Moderate
1pm 5.3
Moderate
2pm 4.7
Moderate
3pm 3.3
Moderate
4pm 1.8
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, October 18th in Grand Terrace, CA 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 0.9
Low
10am 2.3
Low
11am 4
Moderate
12pm 5.2
Moderate
1pm 5.6
Moderate
2pm 4.9
Moderate
3pm 3.4
Moderate
4pm 1.8
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, October 19th in Grand Terrace, CA 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 0.9
Low
10am 2.2
Low
11am 3.8
Moderate
12pm 5.1
Moderate
1pm 5.4
Moderate
2pm 4.7
Moderate
3pm 3.3
Moderate
4pm 1.8
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, October 20th in Grand Terrace, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low