Upper Saint Clair, Pennsylvania, United States UV Index Forecast

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

NOW
3:59 pm

High6

UV INDEX

Hourly UV Index Forecast for Today
September 12, 2025

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

As of 3:59 pm today in Upper Saint Clair, Pennsylvania, United States, the UV Index is currently at a High level of 6.

Summary of Hourly UV Index Forecast for Today and Tomorrow in Upper Saint Clair, Pennsylvania, United States.

Today

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

Daily Upper Saint Clair UV Index Forecast for the next 15 days:

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

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