UV Index for Alta Sierra, CA

Current Alta Sierra UV Index

1.2 (Low)

Last Updated 40 minutes ago

Hourly Alta Sierra UV Index

The hourly Alta Sierra, CA UV Index forecast for Wednesday, July 2nd, 2025.

5 Day Hourly Alta Sierra UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Alta Sierra, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Alta Sierra over the next five days will be 10.2 on Thursday, July 3rd at 1:00 pm.

The UV index forecast for Wednesday, July 2nd in Alta Sierra, CA is below.

Time UV Index Risk
9am 2.8
Low
10am 4.9
Moderate
11am 7
High
12pm 8.8
Very High
1pm 9.7
Very High
2pm 9.2
Very High
3pm 7.6
High
4pm 5.4
Moderate
5pm 3.2
Moderate
6pm 1.5
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 Alta Sierra, 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 0.4
Low
8am 1.3
Low
9am 3
Moderate
10am 5.2
Moderate
11am 7.6
High
12pm 9.4
Very High
1pm 10.2
Very High
2pm 9.7
Very High
3pm 8.1
Very High
4pm 5.8
Moderate
5pm 3.4
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 Alta Sierra, 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 0.3
Low
8am 1
Low
9am 2.3
Low
10am 4.3
Moderate
11am 6.3
High
12pm 7.8
High
1pm 8.4
Very High
2pm 8.3
Very High
3pm 7
High
4pm 5.1
Moderate
5pm 3
Moderate
6pm 1.4
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 5th in Alta Sierra, 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