UV Index for Roy, MT

Current Roy UV Index

0.4 (Low)

Last Updated 44 minutes ago

Hourly Roy UV Index

The hourly Roy, MT UV Index forecast for Monday, October 6th, 2025.

5 Day Hourly Roy UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Roy, MT has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Roy over the next five days will be 3.8 on Monday, October 6th at 1:00 pm.

The UV index forecast for Monday, October 6th in Roy, MT is below.

Time UV Index Risk
10am 1.2
Low
11am 2.2
Low
12pm 3.2
Moderate
1pm 3.8
Moderate
2pm 3.6
Moderate
3pm 2.7
Low
4pm 1.8
Low
5pm 0.8
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 7th in Roy, MT 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 0.4
Low
10am 1.2
Low
11am 2.3
Low
12pm 3.3
Moderate
1pm 3.8
Moderate
2pm 3.6
Moderate
3pm 2.8
Low
4pm 1.7
Low
5pm 0.8
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 Wednesday, October 8th in Roy, MT 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 0.4
Low
10am 1.1
Low
11am 2.2
Low
12pm 3.1
Moderate
1pm 3.6
Moderate
2pm 3.5
Moderate
3pm 2.7
Low
4pm 1.6
Low
5pm 0.8
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 Thursday, October 9th in Roy, MT 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