Mount Wilson, California, United States UV Index Forecast

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

NOW
1:00 am

Low0

UV INDEX

Hourly UV Index Forecast for Today
December 18, 2025

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

As of 1:00 am today in Mount Wilson, California, United States, the UV Index is currently at a Low level of 0.



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

Today

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

Tomorrow

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

Daily Mount Wilson UV Index Forecast for the next 15 days:

6
18 Dec
5
19 Dec
5
20 Dec
4
21 Dec
4
22 Dec
5
23 Dec
0
24 Dec
2
25 Dec
1
26 Dec
1
27 Dec
5
28 Dec
3
29 Dec
5
30 Dec
0
31 Dec
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

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