UV Index for Merrimac, MA

Current Merrimac UV Index

0.9 (Low)

Last Updated 51 minutes ago

Hourly Merrimac UV Index

The hourly Merrimac, MA UV Index forecast for Wednesday, December 10th, 2025.

5 Day Hourly Merrimac UV Index Forecast

Last Updated 23 hours ago

The UV index forecast for the next five days in Merrimac, MA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Merrimac over the next five days will be 1.2 on Thursday, December 11th at 11:00 am.

The UV index forecast for Wednesday, December 10th in Merrimac, MA is below.

Time UV Index Risk
1pm 0.7
Low
2pm 0.4
Low
3pm 0.1
Low
4pm 0
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, December 11th in Merrimac, MA 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 0.1
Low
9am 0.4
Low
10am 0.8
Low
11am 1.2
Low
12pm 1.2
Low
1pm 1
Low
2pm 0.6
Low
3pm 0.2
Low
4pm 0
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, December 12th in Merrimac, MA 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 0.1
Low
9am 0.4
Low
10am 0.8
Low
11am 1.2
Low
12pm 1.2
Low
1pm 1
Low
2pm 0.6
Low
3pm 0.2
Low
4pm 0
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, December 13th in Merrimac, MA 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
11am 1
Low
12pm 1.1
Low
1pm 1
Low
2pm 0.6
Low
3pm 0.2
Low
4pm 0
Low
5pm 0
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, December 14th in Merrimac, MA 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