UV Index for Atherton, CA

Current Atherton UV Index

0 (Low)

Last Updated 47 minutes ago

Hourly Atherton UV Index

The hourly Atherton, CA UV Index forecast for Tuesday, December 30th, 2025.

5 Day Hourly Atherton UV Index Forecast

Last Updated 18 hours ago

The UV index forecast for the next five days in Atherton, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Atherton over the next five days will be 2.2 on Thursday, January 1st at 12:00 pm.

The UV index forecast for Tuesday, December 30th in Atherton, CA is below.

Time UV Index Risk
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.1
Low
9am 0.5
Low
10am 1.1
Low
11am 1.7
Low
12pm 2
Low
1pm 1.6
Low
2pm 1.2
Low
3pm 0.6
Low
4pm 0.1
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, December 31st in Atherton, 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
Low
9am 0.2
Low
10am 0.2
Low
11am 0.2
Low
12pm 0.3
Low
1pm 0.4
Low
2pm 0.2
Low
3pm 0.1
Low
4pm 0
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, January 1st in Atherton, 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 0.1
Low
9am 0.6
Low
10am 1.2
Low
11am 1.8
Low
12pm 2.2
Low
1pm 2
Low
2pm 0.8
Low
3pm 0.7
Low
4pm 0.2
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, January 2nd in Atherton, CA is below.

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