UV Index for Onyx, CA

Current Onyx UV Index

0 (Low)

Last Updated 58 minutes ago

Hourly Onyx UV Index

The hourly Onyx, CA UV Index forecast for Wednesday, September 17th, 2025.

5 Day Hourly Onyx UV Index Forecast

Last Updated 11 hours ago

The UV index forecast for the next five days in Onyx, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Onyx over the next five days will be 8.7 on Saturday, September 20th at 1:00 pm.

The UV index forecast for Wednesday, September 17th in Onyx, CA is below.

Time UV Index Risk
11pm 0
Low

The UV index forecast for Thursday, September 18th in Onyx, 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 0.4
Low
9am 1.1
Low
10am 1.3
Low
11am 4
Moderate
12pm 1.1
Low
1pm 0.7
Low
2pm 1.1
Low
3pm 1.7
Low
4pm 0.9
Low
5pm 0.4
Low
6pm 0.2
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 Onyx, 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 0.2
Low
10am 0.3
Low
11am 0.5
Low
12pm 1.5
Low
1pm 8
Very High
2pm 7.4
High
3pm 5.6
Moderate
4pm 2.6
Low
5pm 1.2
Low
6pm 0.3
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Onyx, 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 6.2
High
12pm 8.1
Very High
1pm 8.7
Very High
2pm 7.8
High
3pm 5.8
Moderate
4pm 3.4
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 21st in Onyx, 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