UV Index for Diamond Bar, CA

Current Diamond Bar UV Index

3.7 (Moderate)

Last Updated 48 minutes ago

Hourly Diamond Bar UV Index

The hourly Diamond Bar, CA UV Index forecast for Saturday, September 13th, 2025.

5 Day Hourly Diamond Bar UV Index Forecast

Last Updated 23 hours ago

The UV index forecast for the next five days in Diamond Bar, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Diamond Bar over the next five days will be 8.2 on Saturday, September 13th at 1:00 pm.

The UV index forecast for Saturday, September 13th in Diamond Bar, CA is below.

Time UV Index Risk
11am 5.9
Moderate
12pm 7.6
High
1pm 8.2
Very High
2pm 7.3
High
3pm 5.4
Moderate
4pm 3.2
Moderate
5pm 1.4
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 Sunday, September 14th in Diamond Bar, 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 0.5
Low
9am 1.8
Low
10am 3.7
Moderate
11am 5.9
Moderate
12pm 7.6
High
1pm 8
Very High
2pm 7.2
High
3pm 5.4
Moderate
4pm 3.2
Moderate
5pm 1.3
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 Monday, September 15th in Diamond Bar, 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 0.5
Low
9am 1.8
Low
10am 3.8
Moderate
11am 6
High
12pm 7.6
High
1pm 8.1
Very High
2pm 7.3
High
3pm 5.4
Moderate
4pm 3.2
Moderate
5pm 1.4
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 Tuesday, September 16th in Diamond Bar, 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