UV Index for Fort Smith, AR

Current Fort Smith UV Index

0 (Low)

Last Updated 54 minutes ago

Hourly Fort Smith UV Index

The hourly Fort Smith, AR UV Index forecast for Saturday, October 18th, 2025.

5 Day Hourly Fort Smith UV Index Forecast

Last Updated 12 hours ago

The UV index forecast for the next five days in Fort Smith, AR has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Fort Smith over the next five days will be 5.2 on Monday, October 20th at 1:00 pm.

The UV index forecast for Saturday, October 18th in Fort Smith, AR is below.

Time UV Index Risk
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0
Low
9am 0.5
Low
10am 1.6
Low
11am 2
Low
12pm 0.8
Low
1pm 2.5
Low
2pm 0.1
Low
3pm 0.4
Low
4pm 0.6
Low
5pm 1
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, October 19th in Fort Smith, AR 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
Low
9am 0.5
Low
10am 1.4
Low
11am 2.9
Low
12pm 4.2
Moderate
1pm 5
Moderate
2pm 4.8
Moderate
3pm 3.8
Moderate
4pm 2.3
Low
5pm 1
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, October 20th in Fort Smith, AR 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
Low
9am 0.5
Low
10am 1.5
Low
11am 3
Moderate
12pm 4.4
Moderate
1pm 5.2
Moderate
2pm 5
Moderate
3pm 3.9
Moderate
4pm 2.2
Low
5pm 0.9
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, October 21st in Fort Smith, AR 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