Penn Valley, California, United States UV Index Forecast

Find the UV Index forecast for today, tomorrow and the next 15 days for Penn Valley, California, United States, The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated hourly.

NOW
11:20 am

High6

UV INDEX

Hourly UV Index Forecast for Today
September 12, 2025

0
7 am
1
8 am
3
9 am
5
10 am
6
11 am
8
12 pm
8
1 pm
8
2 pm
7
3 pm
6
4 pm
4
5 pm
2
6 pm
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

As of 11:20 am today in Penn Valley, California, United States, the UV Index is currently at a High level of 6.

Summary of Hourly UV Index Forecast for Today and Tomorrow in Penn Valley, California, United States.

Today

Time Range UV Index Risk
7 am 0
Low
8 am 1
Low
9 am 3
Moderate
10 am 5
Moderate
11 am 6
High
12 pm 8
Very High
1 pm 8
Very High
2 pm 8
Very High
3 pm 7
High
4 pm 6
High
5 pm 4
Moderate
6 pm 2
Low

Tomorrow

Time Range UV Index Risk
7 am 0
Low
8 am 1
Low
9 am 3
Moderate
10 am 5
Moderate
11 am 6
High
12 pm 8
Very High
1 pm 8
Very High
2 pm 8
Very High
3 pm 7
High
4 pm 6
High
5 pm 5
Moderate
6 pm 3
Moderate

Daily Penn Valley UV Index Forecast for the next 15 days:

8
12 Sep
8
13 Sep
8
14 Sep
8
15 Sep
8
16 Sep
8
17 Sep
8
18 Sep
8
19 Sep
8
20 Sep
8
21 Sep
7
22 Sep
8
23 Sep
8
24 Sep
8
25 Sep
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

UV Index in Nearby Cities