UV Index in Yosemite Valley, Mariposa, California
Tuesday
08/19
Current UV Index:
0
Low risk of harm
A UV index of 0 to 2 means that the danger from the Sun's UV rays to the average person is low.
UV Index Scale
0
- 2
Low risk of harm
A UV index of 0 to 2 means that the danger from the Sun's UV rays to the average person is low.
3
- 5
Medium risk of harm
A UV index of 3 to 5 means a moderate risk of harm from unprotected sun exposure.
6
- 7
High risk of harm
A UV Index of 6 to 7 means a high risk of harm from unprotected sun exposure. Skin and eye protection is essential.
8
- 10
Very high risk of harm
A UV Index of 8 to 10 means there is a very high risk of harm from unprotected sun exposure. Take extra precautions as unprotected skin and eyes are vulnerable and can burn quickly.
11+
Risk of dangerous harm
A UV Index of 11 or higher means an extremely high risk of harm from unprotected sun exposure. Take every precaution as unprotected skin and eyes can burn in minutes.
Hourly UV Index Forecast
Wear sunglasses on sunny days. In winter, reflection can double the intensity of UV rays.
If you burn easily, cover up and use sunscreen.
If you burn easily, cover up and use sunscreen.
1-2
Low
3-5
Medium
6-7
High
8-10
Very high
11+
Extremely high
Daily UV Index Forecast
Today
08/19
3o
/
20o
10.72
Risk of dangerous harm
Wed
08/20
7o
/
26o
10.64
Risk of dangerous harm
Thu
08/21
15o
/
29o
10.46
Risk of dangerous harm
Fri
08/22
16o
/
29o
10.39
Risk of dangerous harm
Sat
08/23
17o
/
29o
10.35
Risk of dangerous harm
Sun
08/24
16o
/
27o
11
Risk of dangerous harm
Mon
08/25
15o
/
25o
11
Risk of dangerous harm
Tue
08/26
13o
/
22o
11
Risk of dangerous harm
08/19/2025
9o
Clear sky
3oC
/
20oC
| Real feel
7oC
0% rain
|
0 mm
1018
0
4.7
08/19/2025
1760
0
4.9
08/18/2025
1216
0
4.6
08/19/2025
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