UV Index for Harbor Island, SC

Current Harbor Island UV Index

0 (Low)

Last Updated 15 minutes ago

Hourly Harbor Island UV Index

The hourly Harbor Island, SC UV Index forecast for Wednesday, September 17th, 2025.

5 Day Hourly Harbor Island UV Index Forecast

Last Updated 7 hours ago

The UV index forecast for the next five days in Harbor Island, SC has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Harbor Island over the next five days will be 8.1 on Saturday, September 20th at 1:00 pm.

The UV index forecast for Wednesday, September 17th in Harbor Island, SC is below.

Time UV Index Risk
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 18th in Harbor Island, SC 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
Low
8am 0.2
Low
9am 1
Low
10am 2.6
Low
11am 4.7
Moderate
12pm 6.8
High
1pm 7.9
High
2pm 7.7
High
3pm 6.3
High
4pm 4.1
Moderate
5pm 2.1
Low
6pm 0.7
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 19th in Harbor Island, SC 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
Low
8am 0.2
Low
9am 0.9
Low
10am 2.5
Low
11am 4.6
Moderate
12pm 6.6
High
1pm 7.8
High
2pm 7.6
High
3pm 6.2
High
4pm 4.1
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Harbor Island, SC 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
Low
8am 0.2
Low
9am 1
Low
10am 2.6
Low
11am 4.8
Moderate
12pm 6.9
High
1pm 8.1
Very High
2pm 7.9
High
3pm 6.5
High
4pm 4.3
Moderate
5pm 2.2
Low
6pm 0.7
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, September 21st in Harbor Island, SC 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
Low
8am 0.2
Low