UV Index for Westby, MT

Current Westby UV Index

3.9 (Moderate)

Last Updated 21 minutes ago

Hourly Westby UV Index

The hourly Westby, MT UV Index forecast for Tuesday, July 15th, 2025.

5 Day Hourly Westby UV Index Forecast

Last Updated 2 hours ago

The UV index forecast for the next five days in Westby, MT has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Westby over the next five days will be 6.8 on Friday, July 18th at 1:00 pm.

The UV index forecast for Tuesday, July 15th in Westby, MT is below.

Time UV Index Risk
3pm 1.8
Low
4pm 2.4
Low
5pm 1.5
Low
6pm 0.5
Low
7pm 0.3
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, July 16th in Westby, 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 0.1
Low
8am 0.3
Low
9am 0.7
Low
10am 1.3
Low
11am 2.2
Low
12pm 3.6
Moderate
1pm 4.1
Moderate
2pm 4.5
Moderate
3pm 3.6
Moderate
4pm 2.1
Low
5pm 2
Low
6pm 0.8
Low
7pm 0.3
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 17th in Westby, 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 0.1
Low
7am 0.4
Low
8am 1.1
Low
9am 2.2
Low
10am 3.4
Moderate
11am 4.5
Moderate
12pm 5.6
Moderate
1pm 5.4
Moderate
2pm 3
Moderate
3pm 1.8
Low
4pm 2.1
Low
5pm 1.4
Low
6pm 0.7
Low
7pm 0.3
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 18th in Westby, 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 0.1
Low
7am 0.4
Low
8am 0.9
Low
9am 2.2
Low
10am 3.8
Moderate
11am 5.2
Moderate
12pm 6.6
High
1pm 6.8
High
2pm 6.6
High
3pm 5.1
Moderate
4pm 1.8
Low
5pm 0.7
Low
6pm 0.2
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th in Westby, 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 0.1
Low