UV Index for Hays, MT

Current Hays UV Index

0.8 (Low)

Last Updated 10 minutes ago

Hourly Hays UV Index

The hourly Hays, MT UV Index forecast for Wednesday, August 13th, 2025.

5 Day Hourly Hays UV Index Forecast

Last Updated 20 hours ago

The UV index forecast for the next five days in Hays, MT has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Hays over the next five days will be 8.2 on Wednesday, August 13th at 1:00 pm.

The UV index forecast for Wednesday, August 13th in Hays, MT is below.

Time UV Index Risk
9am 2
Low
10am 3.7
Moderate
11am 5.7
Moderate
12pm 7.3
High
1pm 8.2
Very High
2pm 7.9
High
3pm 6.7
High
4pm 4.8
Moderate
5pm 2.9
Low
6pm 1.3
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, August 14th in Hays, 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 0.2
Low
8am 0.8
Low
9am 1.9
Low
10am 3.5
Moderate
11am 5.4
Moderate
12pm 6.8
High
1pm 7.1
High
2pm 7.4
High
3pm 6.1
High
4pm 4.4
Moderate
5pm 2.6
Low
6pm 1.2
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, August 15th in Hays, 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 0.2
Low
8am 0.7
Low
9am 1.8
Low
10am 3.4
Moderate
11am 5.2
Moderate
12pm 6.5
High
1pm 6.9
High
2pm 6.5
High
3pm 5.2
Moderate
4pm 3.9
Moderate
5pm 2.2
Low
6pm 0.7
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, August 16th in Hays, 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