UV Index for Portsmouth, IA

Current Portsmouth UV Index

0 (Low)

Last Updated 37 minutes ago

Hourly Portsmouth UV Index

The hourly Portsmouth, IA UV Index forecast for Monday, September 15th, 2025.

5 Day Hourly Portsmouth UV Index Forecast

Last Updated 9 hours ago

The UV index forecast for the next five days in Portsmouth, IA has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Portsmouth over the next five days will be 6.2 on Monday, September 15th at 1:00 pm.

The UV index forecast for Monday, September 15th in Portsmouth, IA is below.

Time UV Index Risk
11pm 0
Low

The UV index forecast for Tuesday, September 16th in Portsmouth, IA 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 0.8
Low
10am 2
Low
11am 3.6
Moderate
12pm 5.1
Moderate
1pm 6
High
2pm 5.8
Moderate
3pm 4.6
Moderate
4pm 3.1
Moderate
5pm 1.6
Low
6pm 0.6
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, September 17th in Portsmouth, IA 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 0.7
Low
10am 1.8
Low
11am 3.4
Moderate
12pm 4.6
Moderate
1pm 5
Moderate
2pm 5
Moderate
3pm 3.6
Moderate
4pm 2.7
Low
5pm 1.4
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 18th in Portsmouth, IA 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 0.7
Low
10am 1.2
Low
11am 3.5
Moderate
12pm 4.5
Moderate
1pm 5.6
Moderate
2pm 3.8
Moderate
3pm 1.4
Low
4pm 2.1
Low
5pm 1
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 Friday, September 19th in Portsmouth, IA 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