UV Index for Alton, UT

Current Alton UV Index

0 (Low)

Last Updated 56 seconds ago

Hourly Alton UV Index

The hourly Alton, UT UV Index forecast for Friday, February 20th, 2026.

5 Day Hourly Alton UV Index Forecast

Last Updated 12 hours ago

The UV index forecast for the next five days in Alton, UT has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Alton over the next five days will be 5.3 on Saturday, February 21st at 1:00 pm.

The UV index forecast for Friday, February 20th in Alton, UT is below.

Time UV Index Risk

The UV index forecast for Saturday, February 21st in Alton, UT 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 0.3
Low
9am 1.3
Low
10am 2.7
Low
11am 4.2
Moderate
12pm 5.2
Moderate
1pm 5.3
Moderate
2pm 3.7
Moderate
3pm 2.4
Low
4pm 1.2
Low
5pm 0.3
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, February 22nd in Alton, UT 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 0.3
Low
9am 1.1
Low
10am 2.2
Low
11am 3.6
Moderate
12pm 4.5
Moderate
1pm 4.8
Moderate
2pm 3.9
Moderate
3pm 2.6
Low
4pm 1.2
Low
5pm 0.4
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, February 23rd in Alton, UT 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 0.4
Low
9am 1.3
Low
10am 2.7
Low
11am 4
Moderate
12pm 4.8
Moderate
1pm 4.7
Moderate
2pm 3.8
Moderate
3pm 2.4
Low
4pm 1.2
Low
5pm 0.4
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, February 24th in Alton, UT is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low